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Facetheory Regena-C Moisturiser M4
Facetheory

Facetheory Regena-C Moisturiser M4

Efficacy68/100IrritancyHigh
See all ingredients

Works for

Anti-aging
Retinyl palmitate, Ferulic acid + 4 more
May help
What the product description says
“Stabilised retinol ester targets fine lines and blemishes.”
Source: Facetheory US

This product contains ferulic acid, retinyl palmitate. These ingredients might be able to help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness, but there is not enough evidence that it actually works.

Retinyl palmitateKey activeEffect: MediumThree steps removed from the active form of vitamin A - retinoic acid. To have an effect in the skin, it first needs to be converted twice to become the retinoic acid. This means it is less potent than retinol, but could also be less irritating. Once converted to the retinoic acid in the skin, it helps against all signs of aging, improves skin cell turnover and helps fight blemishes and clogged pores. However, in many cosmetic formulations, it is used in a concentration that is too low to have the full effect~0.2–0.75%
Ferulic acidKey activeEffect: MediumA potent anti-oxidant that has been shown to be effective in neutralizing free radicals in skin. There seem to have a synergetic effect of ferulic acid, vitamin E and C, meaning that when the ingredients are used together, they enhance each other's ability protect the skin against free radicals. Ferulic acid also helps to stabilize other ingredients - including vitamins C and E. It can help to even out the skin tone. Ferulic acid is approved for use as a sunscreen ingredient in Japan in concentrations up to 10%~0.1–0.35%
Butyrospermum parkii butterEffect: LowA great moisturising ingredient that softens the skin and reduces water loss from its upper layer. It also can be helpful in protecting skin from free radicals~3.7–5.6%
Aloe barbadensis leaf juiceEffect: Low, below effective doseTraditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin~0.35–0.8%
TocopherolEffect: Low, below effective dosePure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself~0.15–0.5%
Sodium ascorbyl phosphateEffect: Low, below effective doseA stable derivative of vitamin C. It is oil-soluble which means it is more likely to penetrate the skin compared to the pure form of vitamin C (which is water-soluble), but it is less bio-available and is way less effective in stimulating collagen and reducing wrinkles compared to the pure form of vitamin C (L-ascorbic acid) and its other derivatives (for example, magnesium ascorbyl phosphate). At the same time, this vitamin C derivative has been shown in studies to be effective in reducing acne, blemishes and clogged pores. It is less irritating then the pure form of vitamin C~0.1–0.4%
Moisturizing
Glycerin, Butyrospermum parkii butter + 11 more
Works
What the product description says
“Product name: Regena-C Moisturiser M4”
Source: Facetheory US

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: glycerin, sodium hyaluronate.

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: butyrospermum parkii butter, oryza sativa bran oil.

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~3.9–5.8%
Butyrospermum parkii butterKey active· Emollient, OcclusiveEffect: HighA great moisturising ingredient that softens the skin and reduces water loss from its upper layer. It also can be helpful in protecting skin from free radicals~3.7–5.6%
Glyceryl stearate seKey activeEffect: MediumUsed to stabilize the product formulations and works as an emollient~2–3%
Prunus armeniaca kernel oilKey active· EmollientEffect: HighAn emollient that helps soften the skin~1.7–2.6%
Olea europaea fruit oilKey active· EmollientEffect: MediumAn emollient that helps soften the skin but is not effective for restoring its barrier function. Might be helpful to calm down inflammation~1.4–2.1%
Cetyl alcoholKey active· EmollientEffect: MediumA non-drying alcohol that works to soften the skin and stabilize product formulations helping oil and water mix together~1.3–2%
Oryza sativa bran oilKey active· EmollientEffect: HighHelps soften the upper layer of the skin and might have some anti-oxidant properties~0.85–1.3%
Sodium hyaluronateKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Attracts water into the upper layer of the skin~0.35–0.85%
Stearic acid· EmollientEffect: LowHelps oil and water mix together and works as an emollient~1.1–1.7%
Glyceryl caprylate· EmollientEffect: LowAn emollient that can also help water and oil mix together, as well as prevent bacteria growth in products~0.35–0.8%
Aloe barbadensis leaf juiceEffect: Low, below effective doseTraditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin~0.35–0.8%
TocopherolEffect: Low, below effective dosePure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself~0.15–0.5%
Argania spinosa kernel oilUnder-dosedAn emollient that helps soften the upper layer of the skin. Might have some weak anti-oxidant properties~0.15–0.65%
Evens skin tone
Retinyl palmitate, Ferulic acid
May help
What the product description says
“Vitamins C and E help to combat hyperpigmentation and shield against free radicals.”
Source: Facetheory US

The following ingredient (ingredients) in this product might be helpful, but there is no evidence to confirm that it actually works: ferulic acid, retinyl palmitate.

Retinyl palmitateKey activeEffect: MediumThree steps removed from the active form of vitamin A - retinoic acid. To have an effect in the skin, it first needs to be converted twice to become the retinoic acid. This means it is less potent than retinol, but could also be less irritating. Once converted to the retinoic acid in the skin, it helps against all signs of aging, improves skin cell turnover and helps fight blemishes and clogged pores. However, in many cosmetic formulations, it is used in a concentration that is too low to have the full effect~0.2–0.75%
Ferulic acidKey activeEffect: MediumA potent anti-oxidant that has been shown to be effective in neutralizing free radicals in skin. There seem to have a synergetic effect of ferulic acid, vitamin E and C, meaning that when the ingredients are used together, they enhance each other's ability protect the skin against free radicals. Ferulic acid also helps to stabilize other ingredients - including vitamins C and E. It can help to even out the skin tone. Ferulic acid is approved for use as a sunscreen ingredient in Japan in concentrations up to 10%~0.1–0.35%
Anti-blemish
Retinyl palmitate, Aloe barbadensis leaf juice + 1 more
Not delivered
What the product description says
“Stabilised retinol ester targets fine lines and blemishes.”
Source: Facetheory US

This product contains ingredients (retinyl palmitate) that could help reduce blemishes and clogged pores in theory, but there is not enough evidence that they actually work.

Retinyl palmitateKey activeEffect: MediumThree steps removed from the active form of vitamin A - retinoic acid. To have an effect in the skin, it first needs to be converted twice to become the retinoic acid. This means it is less potent than retinol, but could also be less irritating. Once converted to the retinoic acid in the skin, it helps against all signs of aging, improves skin cell turnover and helps fight blemishes and clogged pores. However, in many cosmetic formulations, it is used in a concentration that is too low to have the full effect~0.2–0.75%
Aloe barbadensis leaf juiceEffect: Low, below effective doseTraditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin~0.35–0.8%
Sodium ascorbyl phosphateUnder-dosedA stable derivative of vitamin C. It is oil-soluble which means it is more likely to penetrate the skin compared to the pure form of vitamin C (which is water-soluble), but it is less bio-available and is way less effective in stimulating collagen and reducing wrinkles compared to the pure form of vitamin C (L-ascorbic acid) and its other derivatives (for example, magnesium ascorbyl phosphate). At the same time, this vitamin C derivative has been shown in studies to be effective in reducing acne, blemishes and clogged pores. It is less irritating then the pure form of vitamin C~0.1–0.4%
Anti-oxidation
Not advertised by the brand · Ferulic acid, Butyrospermum parkii butter + 4 more
Works well

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

Ferulic acidKey activeEffect: HighA potent anti-oxidant that has been shown to be effective in neutralizing free radicals in skin. There seem to have a synergetic effect of ferulic acid, vitamin E and C, meaning that when the ingredients are used together, they enhance each other's ability protect the skin against free radicals. Ferulic acid also helps to stabilize other ingredients - including vitamins C and E. It can help to even out the skin tone. Ferulic acid is approved for use as a sunscreen ingredient in Japan in concentrations up to 10%~0.1–0.35%
Butyrospermum parkii butterEffect: LowA great moisturising ingredient that softens the skin and reduces water loss from its upper layer. It also can be helpful in protecting skin from free radicals~3.7–5.6%
Prunus armeniaca kernel oilEffect: LowAn emollient that helps soften the skin~1.7–2.6%
Argania spinosa kernel oilEffect: Low, below effective doseAn emollient that helps soften the upper layer of the skin. Might have some weak anti-oxidant properties~0.15–0.65%
TocopherolUnder-dosedPure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself~0.15–0.5%
Sodium ascorbyl phosphateUnder-dosedA stable derivative of vitamin C. It is oil-soluble which means it is more likely to penetrate the skin compared to the pure form of vitamin C (which is water-soluble), but it is less bio-available and is way less effective in stimulating collagen and reducing wrinkles compared to the pure form of vitamin C (L-ascorbic acid) and its other derivatives (for example, magnesium ascorbyl phosphate). At the same time, this vitamin C derivative has been shown in studies to be effective in reducing acne, blemishes and clogged pores. It is less irritating then the pure form of vitamin C~0.1–0.4%

Can it cause trouble?

Irritancy
5 strong irritants: Sodium anisate, Retinyl palmitate + 3 more — patch-test recommended
High risk
We flagged 11 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
Sodium anisateUsed as a fragranceHigh~0.4–0.95%est.
Retinyl palmitateThree steps removed from the active form of vitamin A - retinoic acid. To have an effect in the skin, it first needs to be converted twice to become the retinoic acid. This means it is less potent than retinol, but could also be less irritating. Once converted to the retinoic acid in the skin, it helps against all signs of aging, improves skin cell turnover and helps fight blemishes and clogged pores. However, in many cosmetic formulations, it is used in a concentration that is too low to have the full effectHigh~0.2–0.75%est.
Citrus nobilis peel oilA plant oil with high content of volatile compounds that, especially when exposed to air, can cause allergic reactions and irritate the skinHigh~0.05–0.2%est.
LimoneneA common frangrance that can easily irritate skin, especially if exposed to air, light or heatHigh0.2045%
LinaloolA fragrance. Can be irritatingHigh0.00225%
Prunus armeniaca kernel oilAn emollient that helps soften the skinMedium~1.7–2.6%est.
Olea europaea fruit oilAn emollient that helps soften the skin but is not effective for restoring its barrier function. Might be helpful to calm down inflammationMedium~1.4–2.1%est.
Sodium levulinateA preservativeMedium~0.5–1.15%est.
Aloe barbadensis leaf juiceTraditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skinMedium~0.35–0.8%est.
Argania spinosa kernel oilAn emollient that helps soften the upper layer of the skin. Might have some weak anti-oxidant propertiesMedium~0.15–0.65%est.
Sodium ascorbyl phosphateA stable derivative of vitamin C. It is oil-soluble which means it is more likely to penetrate the skin compared to the pure form of vitamin C (which is water-soluble), but it is less bio-available and is way less effective in stimulating collagen and reducing wrinkles compared to the pure form of vitamin C (L-ascorbic acid) and its other derivatives (for example, magnesium ascorbyl phosphate). At the same time, this vitamin C derivative has been shown in studies to be effective in reducing acne, blemishes and clogged pores. It is less irritating then the pure form of vitamin CMedium~0.1–0.4%est.
Comedogenic
2 ingredients rated 2 or more on the 0–5 pore-clogging scale
2 flagged
These ingredients have a comedogenic rating of 2 or more on a 0–5 scale; the table shows each one's rating. In leave-on products they can clog pores in acne-prone skin.
IngredientFunctionRatingEst. amount
Butyrospermum parkii butterA great moisturising ingredient that softens the skin and reduces water loss from its upper layer. It also can be helpful in protecting skin from free radicals3/5~3.7–5.6%est.
Glyceryl stearate seUsed to stabilize the product formulations and works as an emollient2/5~2–3%est.
Alternatives
Cheaper, or higher on efficacy
Vitamin C + Turmeric Firming Face Cream
Elastalift Vitamin C + Turmeric Firming Face Cream
Higher efficacy · 75/10058% match
$12.99
Multi-Peptide Rich Cream
Naturium Multi-Peptide Rich Cream
Higher efficacy · 87/10058% match
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Ingredients

Filter by role to see what each ingredient is doing.

Water~40–60%
Formula
Irritation risk
Low

Plain old water

More about Water
Glycerin~3.9–5.8%
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
Butyrospermum parkii butter~3.7–5.6%
Key activeComedogenic 3/5
Irritation risk
Low
Comedogenicity
3/5
Works for
MoisturizingAnti-oxidationAnti-aging

A great moisturising ingredient that softens the skin and reduces water loss from its upper layer. It also can be helpful in protecting skin from free radicals

More about Butyrospermum parkii butter
Prunus amygdalus sativa kernel oil~2.4–3.6%
Formula
Irritation risk
Low
More about Prunus amygdalus sativa kernel oil
Glyceryl stearate se~2–3%
Key activeComedogenic 2/5
Irritation risk
Low
Comedogenicity
2/5
Works for
CleansingMoisturizing

Used to stabilize the product formulations and works as an emollient

More about Glyceryl stearate se
Prunus armeniaca kernel oil~1.7–2.6%
Key activeIrritant · medium
Irritation risk
Medium
Works for
MoisturizingAnti-oxidation

An emollient that helps soften the skin

More about Prunus armeniaca kernel oil
Olea europaea fruit oil~1.4–2.1%
Key activeIrritant · medium
Irritation risk
Medium
Works for
Moisturizing

An emollient that helps soften the skin but is not effective for restoring its barrier function. Might be helpful to calm down inflammation

More about Olea europaea fruit oil
Cetyl alcohol~1.3–2%
Key active
Irritation risk
Low
Works for
CleansingMoisturizing

A non-drying alcohol that works to soften the skin and stabilize product formulations helping oil and water mix together

More about Cetyl alcohol
Stearic acid~1.1–1.7%
Formula
Irritation risk
Low
Works for
CleansingMoisturizing

Helps oil and water mix together and works as an emollient

More about Stearic acid
Oryza sativa bran oil~0.85–1.3%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps soften the upper layer of the skin and might have some anti-oxidant properties

More about Oryza sativa bran oil
Sodium levulinate~0.5–1.15%
Irritant · medium
Irritation risk
Medium

A preservative

More about Sodium levulinate
Sodium anisate~0.4–0.95%
Irritant · high
Irritation risk
High

Used as a fragrance

More about Sodium anisate
Sodium hyaluronate~0.35–0.85%
Key active
Irritation risk
Low
Works for
Moisturizing

One of the best moisturizing ingredients. Attracts water into the upper layer of the skin

More about Sodium hyaluronate
Aloe barbadensis leaf juice~0.35–0.8%
Irritant · medium
Irritation risk
Medium
Works for
MoisturizingAnti-inflammatoryReduces irritationAntibacterialReduces rednessAnti-blemishAnti-aging

Traditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin

More about Aloe barbadensis leaf juice
Retinyl palmitate~0.2–0.75%
Key activeIrritant · high
Irritation risk
High
Works for
Anti-blemishEvens skin toneAnti-agingExfoliation

Three steps removed from the active form of vitamin A - retinoic acid. To have an effect in the skin, it first needs to be converted twice to become the retinoic acid. This means it is less potent than retinol, but could also be less irritating. Once converted to the retinoic acid in the skin, it helps against all signs of aging, improves skin cell turnover and helps fight blemishes and clogged pores. However, in many cosmetic formulations, it is used in a concentration that is too low to have the full effect

More about Retinyl palmitate
Glyceryl caprylate~0.35–0.8%
Formula
Irritation risk
Low
Works for
CleansingMoisturizing

An emollient that can also help water and oil mix together, as well as prevent bacteria growth in products

More about Glyceryl caprylate
Amorphophallus konjac root extract~0.15–0.65%
Formula
Irritation risk
Low
More about Amorphophallus konjac root extract
Argania spinosa kernel oil~0.15–0.65%
Under-dosedIrritant · medium
Irritation risk
Medium
Works for
MoisturizingAnti-oxidation

An emollient that helps soften the upper layer of the skin. Might have some weak anti-oxidant properties

More about Argania spinosa kernel oil
Tocopherol~0.15–0.5%
Under-dosed
Irritation risk
Low
Works for
Anti-oxidationMoisturizingAnti-inflammatoryAnti-aging

Pure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself

More about Tocopherol
Xanthan gum~0.15–0.5%
Formula
Irritation risk
Low
Works for
Cleansing

Used to create a thicker product consistency

More about Xanthan gum
Sodium ascorbyl phosphate~0.1–0.4%
Under-dosedIrritant · medium
Irritation risk
Medium
Works for
Anti-blemishAnti-oxidationAnti-aging

A stable derivative of vitamin C. It is oil-soluble which means it is more likely to penetrate the skin compared to the pure form of vitamin C (which is water-soluble), but it is less bio-available and is way less effective in stimulating collagen and reducing wrinkles compared to the pure form of vitamin C (L-ascorbic acid) and its other derivatives (for example, magnesium ascorbyl phosphate). At the same time, this vitamin C derivative has been shown in studies to be effective in reducing acne, blemishes and clogged pores. It is less irritating then the pure form of vitamin C

More about Sodium ascorbyl phosphate
Ferulic acid~0.1–0.35%
Key active
Irritation risk
Low
Works for
Anti-oxidationAnti-inflammatoryEvens skin toneAnti-aging

A potent anti-oxidant that has been shown to be effective in neutralizing free radicals in skin. There seem to have a synergetic effect of ferulic acid, vitamin E and C, meaning that when the ingredients are used together, they enhance each other's ability protect the skin against free radicals. Ferulic acid also helps to stabilize other ingredients - including vitamins C and E. It can help to even out the skin tone. Ferulic acid is approved for use as a sunscreen ingredient in Japan in concentrations up to 10%

More about Ferulic acid
Citrus nobilis peel oil~0.05–0.2%
Irritant · high
Irritation risk
High

A plant oil with high content of volatile compounds that, especially when exposed to air, can cause allergic reactions and irritate the skin

More about Citrus nobilis peel oil
Limonene0.2045%
Irritant · high
Irritation risk
High

A common frangrance that can easily irritate skin, especially if exposed to air, light or heat

More about Limonene
Linalool0.00225%
Irritant · high
Irritation risk
High

A fragrance. Can be irritating

More about Linalool
Ingredient list view

Water, Glycerin, Butyrospermum parkii butter, Prunus amygdalus sativa kernel oil, Glyceryl stearate se, Prunus armeniaca kernel oil, Olea europaea fruit oil, Cetyl alcohol, Stearic acid, Oryza sativa bran oil, Sodium levulinate, Sodium anisate, Sodium hyaluronate, Aloe barbadensis leaf juice, Retinyl palmitate, Glyceryl caprylate, Amorphophallus konjac root extract, Argania spinosa kernel oil, Tocopherol, Xanthan gum, Sodium ascorbyl phosphate, Ferulic acid, Citrus nobilis peel oil, Limonene, Linalool

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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
FacetheoryRegena-C Moisturiser M4YOUR PRODUCTBondi SandsGet Glowin’ Brightening Vitamin C MoisturiserYEOUTHHyaluronic Acid CreamNaturiumMulti-Peptide Rich Cream
Match—58%58%58%
Price——$10.20$18.99
Shared key ingredients—3 of 84 of 83 of 8
Key difference—Sodium Ascorbyl PhosphateCaprylic/Capric TriglycerideCopper Tripeptide-1
Irritancy High Medium Low Medium
Drying alcohol————
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Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 21 studies and safety reviews.

  1. 1
    Glycerol and the skin: holistic approach to its origin and functionsncbi.nlm.nih.gov
  2. 2
    Use of “natural” oils for moisturization: Review of olive, coconut, and sunflower seed oilonlinelibrary.wiley.com
  3. 3
    Study on the Composition of Rice Bran Oil and Its Higher Free Fatty Acids Valuelink.springer.com
  4. 4
    Hyaluronic acid: A key molecule in skin agingncbi.nlm.nih.gov
  5. 5
    Hyaluronan (Hyaluronic Acid): a natural moisturizer for skin careresearchgate.net
  6. 6
    Natural vegetable fats in the prevention of irritant contact dermatitisncbi.nlm.nih.gov
Facetheory Regena-C Moisturiser M4
FacetheoryRegena-C Moisturiser M4
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Find on Amazon

As an Amazon Associate, WIMJ earns from qualifying purchases.