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haruharu US Black Rice Night Knight Retinol Serum
haruharu US

haruharu US Black Rice Night Knight Retinol Serum

Efficacy100/100IrritancyMedium
See all ingredients

Works for

Moisturizing
Ceramide np, Glycerin + 11 more
Works well
What the product description says
“Enriched with ceramide NP and nutrient-rich black rice extract, it deeply hydrates and strengthens the skin barrier for a plump, resilient complexion.”
Source: Korean Skincare UK

This product can help improve hydration of the skin with the two types of ingredients.

The first type is called “humectants”:
these ingredients help attract water. When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from within deeper layers of the skin. The following ingredients in this product do the job: arginine, glycerin.

This product also contains ingredients called “occlusives”. They help reduce the speed with which our skin loses moisture to the outside environment. These ingredients also help soften the upper layer of the skin, so it feels less tight and nicer to the touch. The following ingredients in this product do the job: arginine, caprylic/capric triglyceride.

The following ingredients in this product are especially good for supporting the skin barrier and helping with the hydration level: ceramide np

Ceramide npHero· EmollientEffect: HighA type of lipid similar to ceramides naturally present in skin. Helps to soften the upper layer of the skin and supports the skin barrier function to keep it hydrated. Can help to prevent inflammation in skin~0.2–0.35%
GlycerinKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant~2.2–2.7%
Caprylic/capric triglycerideKey active· Emollient, OcclusiveEffect: HighA good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerin~1.9–2.3%
Aspergillus fermentKey activeEffect: MediumAn extract from fungus (mold) that typically appears on rice. It can help attract water to the upper layer of the skin, might help neutralize free radicals and possibly somewhat reduce hyperpigmentation~0.3–0.5%
GlucoseKey active· HumectantEffect: MediumHelps attract water to the upper layer of the skin. Could be helpful in restoring the skin barrier function~0.3–0.55%
ArginineKey active· Humectant, OcclusiveEffect: HighAn amino acid that is naturally present in skin and helps keep it hydrated. When used together with AHAs, it can reduce their irritating effect on the skin~0.25–0.45%
AdenosineKey activeEffect: MediumMight help improve cell turnover and reduce inflammation in skin. One study shows that the ingredients might be able to help reduce dynamic wrinkles (for example, in the corners of the eyes or on the forehead)~0.15–0.25%
Hydrogenated polyisobutene· Emollient, OcclusiveEffect: LowUsed to improve the product consistency and soften the upper layer of the skin~5–6.2%
Polyglyceryl-10 stearateEffect: LowHelps water and oil mix together and softens the upper layer of the skin~1–1.3%
Glyceryl stearate· EmollientEffect: LowAn emollient that softens the skin and forms a protective layer on its surface. Helps water and oil mix together~0.65–1%
Caprylyl glycol· Humectant, EmollientEffect: LowHelps preserve products and creates a nice product texture~0.5–0.7%
Butylene glycol· HumectantEffect: LowUsed to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin~0.3–0.5%
Oryza sativa extractEffect: Low, below effective doseA grain extract that helps to create a thicker product consistency. It might have some anti-oxidant properties and help attract water to the upper layer of the skin~0.3–0.55%
Evens skin tone
Retinol, Bakuchiol + 1 more
Works well
What the product description says
“Evens out the skin tone, all while supporting healthy skin function and keeping pores clear.”
Source: Lila Beauty

This product can help reduce hypepigmentation and even out the skin tone because it contains the following effective ingredients: retinol.

In addition, this product contains bakuchiol. This ingredient (ingredients) might help reduce hyperpigmentation, but the effect, if any, is likely to be small.

Keep in mind that you would need to apply any topical skincare targetted at hypigmentation consistently for a couple of months to get a result. No topical skincare product can help get rid of hyperpigmentation (including post-acne marks and age spots) instantly.

RetinolHeroEffect: HighTwo steps removed from the active form of vitamin A - retinoic acid. Once converted to the retinoic acid in the skin, retinol is proven to be effective against all signs of aging. It improves skin cell turnover, helps fight blemishes and clogged pores, can regulate excess oil production and even skin tone. It can, however, be quite irritating~1.3–1.6%
BakuchiolKey activeEffect: HighA plant extract that is, though different in chemical structure, acts similar to retinoids. First studies show that it can help reduce fine lines and wrinkles, improve skin tone, reduce clogged pores and blemishes, and reduce inflammation. There is no conclusive evidence that bakuchiol is as effective as retinol however. The study that directly compared retinol with bakuchiol used bakuchiol applied twice daily compared to once per day for the retinol. According to this study, bakuchiol is less irritating than retinol. Bakuchiol is extracted from seeds of Babchi plant. Other parts of the plant contain coumarins that could cause allergic and irritant reactions. These compounds should be removed in the extraction process when bakuchiol is produced, but it is a good idea to be cautious and stay away from products that include the Babchi plant extracts other than purified bakuchiol to avoid irritation~0.3–0.6%
Aspergillus fermentEffect: LowAn extract from fungus (mold) that typically appears on rice. It can help attract water to the upper layer of the skin, might help neutralize free radicals and possibly somewhat reduce hyperpigmentation~0.3–0.5%
Exfoliation
Retinol
Works well

This product can help exfoliate the skin. In other words, it helps break down the bonds between dead cells on the surface of the skin and speed up the skin turnover. Skin often appears softer and brighter after exfoliation, but overdoing it can result in disrupted skin barrier. The following ingredient is doing the exfoliating job in this product: retinol.

RetinolKey activeEffect: HighTwo steps removed from the active form of vitamin A - retinoic acid. Once converted to the retinoic acid in the skin, retinol is proven to be effective against all signs of aging. It improves skin cell turnover, helps fight blemishes and clogged pores, can regulate excess oil production and even skin tone. It can, however, be quite irritating~1.3–1.6%
Anti-aging
Retinol, Bakuchiol + 1 more
Works well
What the product description says
“Formulated with encapsulated retinol and natural bakuchiol, this serum works overnight to refine texture, reduce the appearance of fine lines, and restore youthful radiance.”
Source: Korean Skincare UK

This product can help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness because it contains retinol, adenosine, bakuchiol.

Keep in mind that it typically takes at least 6 weeks to notice any results because the changes that are needed to improve fine lines and elasticity happen in the deeper layers of the skin. No topical anti-aging product can “erase” wrinkles or fully reverse signs of aging.

RetinolHeroEffect: HighTwo steps removed from the active form of vitamin A - retinoic acid. Once converted to the retinoic acid in the skin, retinol is proven to be effective against all signs of aging. It improves skin cell turnover, helps fight blemishes and clogged pores, can regulate excess oil production and even skin tone. It can, however, be quite irritating~1.3–1.6%
BakuchiolKey activeEffect: HighA plant extract that is, though different in chemical structure, acts similar to retinoids. First studies show that it can help reduce fine lines and wrinkles, improve skin tone, reduce clogged pores and blemishes, and reduce inflammation. There is no conclusive evidence that bakuchiol is as effective as retinol however. The study that directly compared retinol with bakuchiol used bakuchiol applied twice daily compared to once per day for the retinol. According to this study, bakuchiol is less irritating than retinol. Bakuchiol is extracted from seeds of Babchi plant. Other parts of the plant contain coumarins that could cause allergic and irritant reactions. These compounds should be removed in the extraction process when bakuchiol is produced, but it is a good idea to be cautious and stay away from products that include the Babchi plant extracts other than purified bakuchiol to avoid irritation~0.3–0.6%
AdenosineKey activeEffect: HighMight help improve cell turnover and reduce inflammation in skin. One study shows that the ingredients might be able to help reduce dynamic wrinkles (for example, in the corners of the eyes or on the forehead)~0.15–0.25%
Anti-oxidation
Not advertised by the brand · Retinol, Bakuchiol + 4 more
Works well

This product contains antioxidants (bakuchiol, retinol) that can help neutralize free radicals in skin. By doing so, they can lessen the damage the skin gets from the UV light (sun).

RetinolKey activeEffect: HighTwo steps removed from the active form of vitamin A - retinoic acid. Once converted to the retinoic acid in the skin, retinol is proven to be effective against all signs of aging. It improves skin cell turnover, helps fight blemishes and clogged pores, can regulate excess oil production and even skin tone. It can, however, be quite irritating~1.3–1.6%
BakuchiolKey activeEffect: HighA plant extract that is, though different in chemical structure, acts similar to retinoids. First studies show that it can help reduce fine lines and wrinkles, improve skin tone, reduce clogged pores and blemishes, and reduce inflammation. There is no conclusive evidence that bakuchiol is as effective as retinol however. The study that directly compared retinol with bakuchiol used bakuchiol applied twice daily compared to once per day for the retinol. According to this study, bakuchiol is less irritating than retinol. Bakuchiol is extracted from seeds of Babchi plant. Other parts of the plant contain coumarins that could cause allergic and irritant reactions. These compounds should be removed in the extraction process when bakuchiol is produced, but it is a good idea to be cautious and stay away from products that include the Babchi plant extracts other than purified bakuchiol to avoid irritation~0.3–0.6%
Aspergillus fermentEffect: LowAn extract from fungus (mold) that typically appears on rice. It can help attract water to the upper layer of the skin, might help neutralize free radicals and possibly somewhat reduce hyperpigmentation~0.3–0.5%
AdenosineEffect: LowMight help improve cell turnover and reduce inflammation in skin. One study shows that the ingredients might be able to help reduce dynamic wrinkles (for example, in the corners of the eyes or on the forehead)~0.15–0.25%
Oryza sativa extractEffect: Low, below effective doseA grain extract that helps to create a thicker product consistency. It might have some anti-oxidant properties and help attract water to the upper layer of the skin~0.3–0.55%
Panax ginseng root extractEffect: Low, below effective doseA plant extract that might have some anti-inflammatory properties, but solid evidence is lacking. It can be irritating~0.3–0.55%
Anti-blemish
Not advertised by the brand · Retinol, Bakuchiol
Works well

This product can help reduce breakouts and clogged pores because it contains the following ingredient: retinol. This ingredient is used for treating acne and can have a noticeable effect.

In addition, this product contains bakuchiol. It can help in reducing blemishes, even though it is less effective.

RetinolHeroEffect: HighTwo steps removed from the active form of vitamin A - retinoic acid. Once converted to the retinoic acid in the skin, retinol is proven to be effective against all signs of aging. It improves skin cell turnover, helps fight blemishes and clogged pores, can regulate excess oil production and even skin tone. It can, however, be quite irritating~1.3–1.6%
BakuchiolKey activeEffect: HighA plant extract that is, though different in chemical structure, acts similar to retinoids. First studies show that it can help reduce fine lines and wrinkles, improve skin tone, reduce clogged pores and blemishes, and reduce inflammation. There is no conclusive evidence that bakuchiol is as effective as retinol however. The study that directly compared retinol with bakuchiol used bakuchiol applied twice daily compared to once per day for the retinol. According to this study, bakuchiol is less irritating than retinol. Bakuchiol is extracted from seeds of Babchi plant. Other parts of the plant contain coumarins that could cause allergic and irritant reactions. These compounds should be removed in the extraction process when bakuchiol is produced, but it is a good idea to be cautious and stay away from products that include the Babchi plant extracts other than purified bakuchiol to avoid irritation~0.3–0.6%

Can it cause trouble?

Irritancy
1 strong irritant: Retinol
Medium risk
We flagged 15 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
RetinolTwo steps removed from the active form of vitamin A - retinoic acid. Once converted to the retinoic acid in the skin, retinol is proven to be effective against all signs of aging. It improves skin cell turnover, helps fight blemishes and clogged pores, can regulate excess oil production and even skin tone. It can, however, be quite irritatingHigh~1.3–1.6%est.
Panax ginseng root extractA plant extract that might have some anti-inflammatory properties, but solid evidence is lacking. It can be irritatingHigh~0.3–0.55%est.
Caprylic/capric triglycerideA good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerinMedium~6.4–7.8%est.
Polyglyceryl-10 stearateHelps water and oil mix together and softens the upper layer of the skinMedium~1–1.3%est.
Polyglyceryl-2 stearateHelps water and oil mix togetherMedium~0.55–0.85%est.
HydroxyacetophenoneUsed to increase effectiveness of preservativesMedium~0.45–0.7%est.
Caprylyl glycolHelps preserve products and creates a nice product textureMedium~0.5–0.7%est.
1,2-hexanediolA preservativeMedium~0.35–0.65%est.
C12-20 alkyl glucosideHelps water and oil mix togetherMedium~0.3–0.6%est.
BakuchiolA plant extract that is, though different in chemical structure, acts similar to retinoids. First studies show that it can help reduce fine lines and wrinkles, improve skin tone, reduce clogged pores and blemishes, and reduce inflammation. There is no conclusive evidence that bakuchiol is as effective as retinol however. The study that directly compared retinol with bakuchiol used bakuchiol applied twice daily compared to once per day for the retinol. According to this study, bakuchiol is less irritating than retinol. Bakuchiol is extracted from seeds of Babchi plant. Other parts of the plant contain coumarins that could cause allergic and irritant reactions. These compounds should be removed in the extraction process when bakuchiol is produced, but it is a good idea to be cautious and stay away from products that include the Babchi plant extracts other than purified bakuchiol to avoid irritationMedium~0.3–0.6%est.
Potassium cetyl phosphateHelps oil and water mix togetherMedium~0.3–0.55%est.
Phyllostachys pubescens shoot bark extractAn extract of bamboo shoot skins. Has anti-microbial propertiesMedium~0.3–0.5%est.
Acrylates/c10-30 alkyl acrylate crosspolymerMaintains the texture of skincare products. Allows the product to spread evenly. Helps oil and water mix togetherMedium~0.25–0.45%est.
Disodium edtaStabilizes the product formulationMedium~0.2–0.4%est.
EthylhexylglycerinA preservativeMedium~0.2–0.35%est.
Comedogenic
Clean of flagged comedogenic ingredients
None flagged
Alternatives
Cheaper, or higher on efficacy
Hyper Retinol EX 1.0 Serum
ISNTREE Hyper Retinol EX 1.0 Serum
Cheaper86% match
$13.97
Retinol 0.1% Bakuchiol Cica Serum
Mary&May Retinol 0.1% Bakuchiol Cica Serum
Cheaper82% match
$14.00
View all alternatives

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Ingredients

Filter by role to see what each ingredient is doing.

Water~45–55%
Formula
Irritation risk
Low

Plain old water

More about Water
Caprylic/capric triglyceride~6.4–7.8%
Key activeIrritant · medium
Irritation risk
Medium
Works for
Moisturizing

A good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerin

More about Caprylic/capric triglyceride
Hydrogenated polyisobutene~5–6.2%
Formula
Irritation risk
Low
Works for
Moisturizing

Used to improve the product consistency and soften the upper layer of the skin

More about Hydrogenated polyisobutene
Glycerin~3.3–4.1%
Key active
Irritation risk
Low
Works for
Moisturizing

One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant

More about Glycerin
Water~2.6–3.1%
Formula
Irritation risk
Low

Plain old water

More about Water
Glycerin~2.2–2.7%
Key active
Irritation risk
Low
Works for
Moisturizing

One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant

More about Glycerin
Caprylic/capric triglyceride~1.9–2.3%
Key activeIrritant · medium
Irritation risk
Medium
Works for
Moisturizing

A good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerin

More about Caprylic/capric triglyceride
Water~1.6–1.9%
Formula
Irritation risk
Low

Plain old water

More about Water
Retinol~1.3–1.6%
Hero · Anti-aging, Evens skin tone, Anti-blemishIrritant · high
Irritation risk
High
Works for
Anti-oxidationEvens skin toneAnti-blemishMattifyingExfoliationAnti-aging

Two steps removed from the active form of vitamin A - retinoic acid. Once converted to the retinoic acid in the skin, retinol is proven to be effective against all signs of aging. It improves skin cell turnover, helps fight blemishes and clogged pores, can regulate excess oil production and even skin tone. It can, however, be quite irritating

More about Retinol
Polyglyceryl-10 stearate~1–1.3%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

Helps water and oil mix together and softens the upper layer of the skin

More about Polyglyceryl-10 stearate
Hydrogenated lecithin~0.75–1.1%
Formula
Irritation risk
Low
Works for
Cleansing

Helps to retain moisture by creating a protective barrier on the skin. Rich in fatty acids. Improves product texture and helps with the penetration of other ingredients.

More about Hydrogenated lecithin
Glyceryl stearate~0.65–1%
Formula
Irritation risk
Low
Works for
CleansingMoisturizing

An emollient that softens the skin and forms a protective layer on its surface. Helps water and oil mix together

More about Glyceryl stearate
Polyglyceryl-2 stearate~0.55–0.85%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps water and oil mix together

More about Polyglyceryl-2 stearate
Dipropylene glycol~0.5–0.75%
Formula
Irritation risk
Low

Helps to dissolve other ingredients in a formulation. Slows down the rate of product drying

More about Dipropylene glycol
Stearyl alcohol~0.55–0.8%
Formula
Irritation risk
Low
Works for
Cleansing

An emollient that helps soften the skin

More about Stearyl alcohol
Hydroxyacetophenone~0.45–0.7%
Irritant · medium
Irritation risk
Medium

Used to increase effectiveness of preservatives

More about Hydroxyacetophenone
Caprylyl glycol~0.5–0.7%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

Helps preserve products and creates a nice product texture

More about Caprylyl glycol
Helianthus annuus seed~0.4–0.6%
Formula
Irritation risk
Low
More about Helianthus annuus seed
1,2-hexanediol~0.35–0.65%
Irritant · medium
Irritation risk
Medium

A preservative

More about 1,2-hexanediol
C14-22 alcohols~0.3–0.6%
Formula
Irritation risk
Low

A non-drying alcohol that helps stabilize product formulations

More about C14-22 alcohols
C12-20 alkyl glucoside~0.3–0.6%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps water and oil mix together

More about C12-20 alkyl glucoside
Glucose~0.3–0.55%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps attract water to the upper layer of the skin. Could be helpful in restoring the skin barrier function

More about Glucose
Water~0.3–0.5%
Formula
Irritation risk
Low

Plain old water

More about Water
Water~0.3–0.5%
Formula
Irritation risk
Low

Plain old water

More about Water
Oryza sativa extract~0.3–0.55%
Formula
Irritation risk
Low
Works for
MoisturizingAnti-oxidation

A grain extract that helps to create a thicker product consistency. It might have some anti-oxidant properties and help attract water to the upper layer of the skin

More about Oryza sativa extract
Aspergillus ferment~0.25–0.5%
Key active
Irritation risk
Low
Works for
MoisturizingAnti-oxidationEvens skin tone

An extract from fungus (mold) that typically appears on rice. It can help attract water to the upper layer of the skin, might help neutralize free radicals and possibly somewhat reduce hyperpigmentation

More about Aspergillus ferment
Panax ginseng root extract~0.3–0.55%
Irritant · high
Irritation risk
High
Works for
Anti-inflammatoryAnti-oxidation

A plant extract that might have some anti-inflammatory properties, but solid evidence is lacking. It can be irritating

More about Panax ginseng root extract
Butylene glycol~0.3–0.5%
Formula
Irritation risk
Low
Works for
Moisturizing

Used to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin

More about Butylene glycol
1,2-hexanediol~0.25–0.5%
Irritant · medium
Irritation risk
Medium

A preservative

More about 1,2-hexanediol
Cyclodextrin~0.3–0.5%
Formula
Irritation risk
Low

A type of sugar that is used to support delivery of active ingredients and can enhance their penetration into the skin without disrupting the skin's barrier

More about Cyclodextrin
Bakuchiol~0.3–0.6%
Key activeIrritant · medium
Irritation risk
Medium
Works for
Anti-oxidationAnti-inflammatoryAnti-blemishEvens skin toneAnti-aging

A plant extract that is, though different in chemical structure, acts similar to retinoids. First studies show that it can help reduce fine lines and wrinkles, improve skin tone, reduce clogged pores and blemishes, and reduce inflammation. There is no conclusive evidence that bakuchiol is as effective as retinol however. The study that directly compared retinol with bakuchiol used bakuchiol applied twice daily compared to once per day for the retinol. According to this study, bakuchiol is less irritating than retinol. Bakuchiol is extracted from seeds of Babchi plant. Other parts of the plant contain coumarins that could cause allergic and irritant reactions. These compounds should be removed in the extraction process when bakuchiol is produced, but it is a good idea to be cautious and stay away from products that include the Babchi plant extracts other than purified bakuchiol to avoid irritation

More about Bakuchiol
Potassium cetyl phosphate~0.3–0.55%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps oil and water mix together

More about Potassium cetyl phosphate
Water~0.3–0.5%
Formula
Irritation risk
Low

Plain old water

More about Water
Phyllostachys pubescens shoot bark extract~0.3–0.5%
Irritant · medium
Irritation risk
Medium

An extract of bamboo shoot skins. Has anti-microbial properties

More about Phyllostachys pubescens shoot bark extract
Aspergillus ferment~0.3–0.5%
Key active
Irritation risk
Low
Works for
MoisturizingAnti-oxidationEvens skin tone

An extract from fungus (mold) that typically appears on rice. It can help attract water to the upper layer of the skin, might help neutralize free radicals and possibly somewhat reduce hyperpigmentation

More about Aspergillus ferment
1,2-hexanediol~0.25–0.45%
Irritant · medium
Irritation risk
Medium

A preservative

More about 1,2-hexanediol
Arginine~0.25–0.45%
Key active
Irritation risk
Low
Works for
Moisturizing

An amino acid that is naturally present in skin and helps keep it hydrated. When used together with AHAs, it can reduce their irritating effect on the skin

More about Arginine
Acrylates/c10-30 alkyl acrylate crosspolymer~0.25–0.45%
Irritant · medium
Irritation risk
Medium

Maintains the texture of skincare products. Allows the product to spread evenly. Helps oil and water mix together

More about Acrylates/c10-30 alkyl acrylate crosspolymer
Disodium edta~0.2–0.4%
Irritant · medium
Irritation risk
Medium

Stabilizes the product formulation

More about Disodium edta
Water~0.2–0.4%
Formula
Irritation risk
Low

Plain old water

More about Water
Ethylhexylglycerin~0.2–0.35%
Irritant · medium
Irritation risk
Medium

A preservative

More about Ethylhexylglycerin
Xanthan gum~0.2–0.35%
Formula
Irritation risk
Low
Works for
Cleansing

Used to create a thicker product consistency

More about Xanthan gum
Adenosine~0.15–0.25%
Key active
Irritation risk
Low
Works for
Anti-agingMoisturizingAnti-oxidation

Might help improve cell turnover and reduce inflammation in skin. One study shows that the ingredients might be able to help reduce dynamic wrinkles (for example, in the corners of the eyes or on the forehead)

More about Adenosine
Ceramide np~0.2–0.35%
Hero · Moisturizing
Irritation risk
Low
Works for
MoisturizingReduces irritationAnti-inflammatory

A type of lipid similar to ceramides naturally present in skin. Helps to soften the upper layer of the skin and supports the skin barrier function to keep it hydrated. Can help to prevent inflammation in skin

More about Ceramide np
Ingredient list view

Water, Caprylic/capric triglyceride, Hydrogenated polyisobutene, Glycerin, Water, Glycerin, Caprylic/capric triglyceride, Water, Retinol, Polyglyceryl-10 stearate, Hydrogenated lecithin, Glyceryl stearate, Polyglyceryl-2 stearate, Dipropylene glycol, Stearyl alcohol, Hydroxyacetophenone, Caprylyl glycol, Helianthus annuus seed, 1,2-hexanediol, C14-22 alcohols, C12-20 alkyl glucoside, Glucose, Water, Water, Oryza sativa extract, Aspergillus ferment, Panax ginseng root extract, Butylene glycol, 1,2-hexanediol, Cyclodextrin, Bakuchiol, Potassium cetyl phosphate, Water, Phyllostachys pubescens shoot bark extract, Aspergillus ferment, 1,2-hexanediol, Arginine, Acrylates/c10-30 alkyl acrylate crosspolymer, Disodium edta, Water, Ethylhexylglycerin, Xanthan gum, Adenosine, Ceramide np

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Worth comparing, line by line.

Match % combines shared ingredients, the first five ingredients, shared actives and hero ingredients, irritancy (lower counts in the alternative's favour), texture and body area. Only products in the same routine step are compared.

Side-by-side comparison of this product against its closest alternatives
haruharu USBlack Rice Night Knight Retinol SerumYOUR PRODUCTISNTREEHyper Retinol EX 1.0 SerumTONYMOLYRetinol Red Callus Synergy AmpouleMary&MayRetinol 0.1% Bakuchiol Cica Serum
Match—86%82%82%
Price$26.00$13.97−$12.03$56.16+$30.16$14.00−$12.00
Shared key ingredients—6 of 76 of 76 of 7
Key difference—Copper Tripeptide-1NiacinamideNiacinamide
Irritancy Medium Medium High High
Drying alcohol————
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  • differs
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Product summary

"haruharu US - Black Rice Night Knight Retinol Serum" is effective for: Anti-blemish, Anti-aging, Exfoliation, Evens skin tone and Moisturizing

Ingredient callouts

  • this product contains Bakuchiol (0.30% - 0.60%). It is a plant extract that is has a similar effect to that of Retinoids but with less irritation. Bakuchiol can help reduce fine lines and wrinkles, improve skin tone, reduce clogged pores and blemishes, and reduce inflammation.
  • This product contains an effective form of Retinoids (vitamin A): retinol 1.60% - 1.90%. Retinoids are potent multitasking actives. They work to improve and prevent early signs of aging, reduce hyperpigmentation (age spots and post-acne marks), and prevent inflamed blemishes and clogged pores. The downside of Retinoids is that they can be irritating. If you are not already using a Retinoid in your routine, it is best to start slowly and apply the Retinoid product only a few times per week. If your skin tolerates it well, you can gradually increase the frequency to daily.
  • Ceramides (ceramide np 0.20% - 0.35%). Ceramides are a type of lipids that our skin produces itself. They are a building block of the skin's barrier. Ceramides used in skincare are synthetic or extracted from plants. They work well for softening the skin surface and "patch holes" in the skin's barrier.
  • Adenosine 0.15% - 0.25%. It is a compound that in involved in many biological processes inside the skin cells. According one high-quality clinical trial, topical Adenosine in low concentrations can somewhat help improve "deep wrinkles" - the wrinkles that appear with age in places where our faces are most dynamic (for example, on the forehead or in the corners of the eyes).
  • Humectants (arginine 0.25% - 0.45%, glycerin 2.20% - 2.70% and glycerin 3.30% - 4.10%). These ingredients help attract water to the upper layer of the skin and improve the skin hydration.

About the brand

According to Cruelty-Free Kitty "haruharu US" is cruelty free and so is its parent company.

Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 23 studies and safety reviews.

  1. 1
    Final report of the cosmetic ingredient review expert panel on the safety assessment of Polyisobutene and Hydrogenated Polyisobutene as used in cosmeticssemanticscholar.org
  2. 2
    Glycerol and the skin: holistic approach to its origin and functionsncbi.nlm.nih.gov
  3. 3
    Retinoids in the treatment of skin aging: an overview of clinical efficacy and safetyncbi.nlm.nih.gov
  4. 4
    Improvement of naturally aged skin with vitamin A (retinol)ncbi.nlm.nih.gov
  5. 5
    A comparative study of the effects of retinol and retinoic acid on histological, molecular, and clinical properties of human skinonlinelibrary.wiley.com
  6. 6
    Safety Assessment of Polyglyceryl Fatty Acid Esters as Used in Cosmeticscir-safety.org
haruharu US Black Rice Night Knight Retinol Serum
haruharu USBlack Rice Night Knight Retinol Serum
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