Erno Laszlo

Erno Laszlo Dual Phase Vitamin C-Peel

Name: Erno Laszlo - Dual Phase Vitamin C-Peel
Brand: Erno Laszlo

Efficacy45/100IrritancyHigh

See all ingredients

Works for

Moisturizing

Glyceryl stearate se, Helianthus annuus seed oil + 3 more

Works

What the product description says

“A dual peel treatment powered by super-nutrient vitamin C to brightening, hydrating and will help fade dark spots and discoloration.”

Source: Sephora

This product can help soften the skin and reduce its moisture loss with emollients and occlusives: helianthus annuus seed oil.

Keep in mind that this product does not contain effective ingredients to attract water to the upper layer of the skin. This is why an additional product with humectants like glycerin or hyaluronic acid can be helpful (apply it before this product for the best results).

Glyceryl stearate seKey activeEffect: MediumUsed to stabilize the product formulations and works as an emollient~3.6–5.4%

Helianthus annuus seed oilKey active· Emollient, OcclusiveEffect: HighA great emollient due to its high linoleic acid content. One of the most effective plant oils in helping skin hydration and repairing skin barrier function~1.1–1.6%

Peg-8· HumectantEffect: LowUsed to create a nice product consistency~22–34%

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~4.9–7.3%

Lactic acidUnder-dosedAn exfoliating and moisturizing alpha-hydroxy acid (AHA). Typically causes less irritation than other AHAs, for example, glycolic acid. At high concentrations (about 15%), lactic acid can help reduce lines and wrinkles. Recent studies show that lactic acid can support the "good" bacteria living on skin's surface (healthy skin microbiome)~0.15–0.5%

Anti-blemish

Sodium ascorbyl phosphate

Not delivered

What the product description says

“Step one gently exfoliates using lactic acid beads, and has a delightful citrus scent.”

Source: Sephora

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

Sodium ascorbyl phosphateEffect: MediumA 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~0.35–0.85%

Exfoliation

Polylactic acid, Lactic acid

Not delivered

What the product description says

“Step one gently exfoliates using lactic acid beads, and has a delightful citrus scent.”

Source: Sephora

This product might help exfoliate the skin with polylactic acid, but This ingredient is not the most effective.

Polylactic acidEffect: LowUsed as an abrasive ingredient for physical (mechanical) exfoliation~2.2–3.3%

Anti-aging

Sodium ascorbyl phosphate, Ascorbyl palmitate + 1 more

Not delivered

What the product description says

“Balances dry or chapped skin, while helping fight the look of age spots and sun damage. . Lactic Acid.”

Source: Sephora

This product does not contain ingredients that are able to reduce fine lines and wrinkles or help with skin elasticity, but it can improve the look of the skin temporarily through moisturization. Well-moisturized skin might also be able to repair the sun damage better.This ingredient - sodium ascorbyl phosphate - could be helpful for preventing or repairing signs of aging in theory, but there is no evidence that it actually works.

This ingredient sodium ascorbyl phosphate might be able to help neutralize free radicals in skin and help it fight off some of the sun damage.

Sodium ascorbyl phosphateEffect: LowA 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~0.35–0.85%

Ascorbyl palmitateEffect: Low, below effective doseBeing a lipid soluble form of vitamin C, it is more stable and can penetrate the skin better than L-Ascorbic acid. It is effective in protecting the skin from free radicals, as well as evening the skin tone, but is less effective in stimulating collagen production compared to L-Ascorbic acid.~1.6–2.4%

Evens skin tone

Lactic acid ~0.15–0.5%, below the ~2% it needs

Under-dosed

What the product description says

“Scrub Highlighted Ingredients. . Vitamin C. The formula’s star multitaskerto reduce dark spots and dullness, lighten skin, and support natural collagen production. .”

Source: Sephora

Effective ingredients missing or their concentration is too low

Anti-oxidation

Side benefit · Sodium ascorbyl phosphate, Tocopheryl acetate + 3 more

May help

This product contains antioxidants (sodium ascorbyl phosphate) that might be able to help neutralize free radicals in skin to lessen the damage it gets from the UV light (sun). There is not enough evidence to confirm their effectiveness in skin though.

Sodium ascorbyl phosphateKey activeEffect: MediumA 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~0.35–0.85%

Tocopheryl acetateEffect: LowA more stable but less bio-available form of vitamin E compared to Tocopherol. Might help moisturize and protect the skin from free radicals, but mostly used in low concentrations to stabilize other ingredients.~1.3–2%

Daucus carota sativa seed oilEffect: LowA plant oil that might help neutralize free radicals and have an anti-bacterial effect~0.95–1.4%

Daucus carota sativa root extractEffect: LowCarrot extract. Might have anti-oxidant properties and be used to add orange color~0.55–1.3%

Can it cause trouble?

Irritancy

2 strong irritants: Parfum, Limonene — patch-test recommended

High risk

We flagged 12 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.

IngredientFunctionIrritationEst. amount

ParfumAn aromatic blend of unspecified and possibly irritating ingredientsHigh~0.45–1.05%est.

LimoneneA common frangrance that can easily irritate skin, especially if exposed to air, light or heatHigh~0.05–0.25%est.

Peg-8Used to create a nice product consistencyMedium~22–34%est.

Polylactic acidUsed as an abrasive ingredient for physical (mechanical) exfoliationMedium~2.2–3.3%est.

Ascorbyl palmitateBeing a lipid soluble form of vitamin C, it is more stable and can penetrate the skin better than L-Ascorbic acid. It is effective in protecting the skin from free radicals, as well as evening the skin tone, but is less effective in stimulating collagen production compared to L-Ascorbic acid.Medium~1.6–2.4%est.

Tocopheryl acetateA more stable but less bio-available form of vitamin E compared to Tocopherol. Might help moisturize and protect the skin from free radicals, but mostly used in low concentrations to stabilize other ingredients.Medium~1.3–2%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~1.1–1.6%est.

Peg-40 hydrogenated castor oilHelps oil and water mix togetherMedium~0.35–0.85%est.

Disodium edtaStabilizes the product formulationMedium~0.15–0.6%est.

Lactic acidAn exfoliating and moisturizing alpha-hydroxy acid (AHA). Typically causes less irritation than other AHAs, for example, glycolic acid. At high concentrations (about 15%), lactic acid can help reduce lines and wrinkles. Recent studies show that lactic acid can support the "good" bacteria living on skin's surface (healthy skin microbiome)Medium~0.15–0.5%est.

Potassium sorbateA preservativeMedium~0.1–0.4%est.

Sodium dehydroacetateA preservativeMedium~0.1–0.35%est.

Comedogenic

1 ingredient rated 2 or more on the 0–5 pore-clogging scale

1 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

Glyceryl stearate seUsed to stabilize the product formulations and works as an emollient2/5~3.6–5.4%est.

Alternatives

Cheaper, or higher on efficacy

Paula's choice Advanced Pore-Refining Treatment 4% BHA

Higher efficacy · 83/10052% match

View all alternatives

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Ingredients

Filter by role to see what each ingredient is doing.

Peg-8~22–34%

Irritant · medium

Irritation risk: Medium

Works for

Moisturizing

Used to create a nice product consistency

More about Peg-8

Sodium bicarbonate~6.1–9.1%

Formula

Irritation risk: Low

Helps regulate the product pH

More about Sodium bicarbonate

Butylene glycol~4.9–7.3%

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

Glyceryl stearate se~3.6–5.4%

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

Silica~2.9–4.3%

Formula

Irritation risk: Low

Used to absorb oil and can temporarily mattify skin

More about Silica

Polylactic acid~2.2–3.3%

Irritant · medium

Irritation risk: Medium

Works for

Exfoliation

Used as an abrasive ingredient for physical (mechanical) exfoliation

More about Polylactic acid

Ascorbyl palmitate~1.6–2.4%

Irritant · medium

Irritation risk: Medium

Works for

Anti-agingAnti-oxidation

Being a lipid soluble form of vitamin C, it is more stable and can penetrate the skin better than L-Ascorbic acid. It is effective in protecting the skin from free radicals, as well as evening the skin tone, but is less effective in stimulating collagen production compared to L-Ascorbic acid.

More about Ascorbyl palmitate

Tocopheryl acetate~1.3–2%

Irritant · medium

Irritation risk: Medium

Works for

Anti-oxidation

A more stable but less bio-available form of vitamin E compared to Tocopherol. Might help moisturize and protect the skin from free radicals, but mostly used in low concentrations to stabilize other ingredients.

More about Tocopheryl acetate

Sodium ascorbyl phosphate~1.1–1.6%

Key activeIrritant · 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

Helianthus annuus seed oil~1.1–1.6%

Key active

Irritation risk: Low

Works for

Moisturizing

A great emollient due to its high linoleic acid content. One of the most effective plant oils in helping skin hydration and repairing skin barrier function

More about Helianthus annuus seed oil

Daucus carota sativa seed oil~0.95–1.4%

Formula

Irritation risk: Low

Works for

Anti-oxidationAntibacterial

A plant oil that might help neutralize free radicals and have an anti-bacterial effect

More about Daucus carota sativa seed oil

Daucus carota sativa root extract~0.55–1.3%

Formula

Irritation risk: Low

Works for

Anti-oxidation

Carrot extract. Might have anti-oxidant properties and be used to add orange color

More about Daucus carota sativa root extract

Beta-carotene~0.5–1.2%

Formula

Irritation risk: Low

A colorant adding orange or bright yellow color

More about Beta-carotene

Ci 40800~0.5–1.15%

Formula

Irritation risk: Low

More about Ci 40800

Parfum~0.45–1.05%

Irritant · high

Irritation risk: High

An aromatic blend of unspecified and possibly irritating ingredients

More about Parfum

Water~0.45–1.1%

Formula

Irritation risk: Low

Plain old water

More about Water

Linoleamidopropyl pg-dimonium chloride phosphate~0.45–1.05%

Formula

Irritation risk: Low

More about Linoleamidopropyl pg-dimonium chloride phosphate

Polyquaternium-10~0.55–1.25%

Formula

Irritation risk: Low

Helps soften the upper layer of the skin and create a nice product finish

More about Polyquaternium-10

Hydroxyethylcellulose~0.5–1.15%

Formula

Irritation risk: Low

Used to thicken product formulations and create gel-like textures

More about Hydroxyethylcellulose

Sodium ascorbyl phosphate~0.35–0.85%

Key activeIrritant · medium

Irritation risk: Medium

Works for

Anti-blemishAnti-oxidationAnti-aging

More about Sodium ascorbyl phosphate

Polysorbate 20~0.4–0.9%

Formula

Irritation risk: Low

Works for

Cleansing

Helps oil and water mix together

More about Polysorbate 20

Peg-40 hydrogenated castor oil~0.35–0.85%

Irritant · medium

Irritation risk: Medium

Works for

Cleansing

Helps oil and water mix together

More about Peg-40 hydrogenated castor oil

Trideceth-9~0.3–0.75%

Formula

Irritation risk: Low

Works for

Cleansing

More about Trideceth-9

Sodium hydroxide~0.15–0.65%

Formula

Irritation risk: Low

Used to adjust the product's pH

More about Sodium hydroxide

Disodium edta~0.15–0.6%

Irritant · medium

Irritation risk: Medium

Stabilizes the product formulation

More about Disodium edta

Lactic acid~0.15–0.5%

Under-dosedIrritant · medium

Irritation risk: Medium

Works for

MoisturizingExfoliationEvens skin toneAnti-aging

An exfoliating and moisturizing alpha-hydroxy acid (AHA). Typically causes less irritation than other AHAs, for example, glycolic acid. At high concentrations (about 15%), lactic acid can help reduce lines and wrinkles. Recent studies show that lactic acid can support the "good" bacteria living on skin's surface (healthy skin microbiome)

More about Lactic acid

Parfum~0.1–0.4%

Irritant · high

Irritation risk: High

An aromatic blend of unspecified and possibly irritating ingredients

More about Parfum

Potassium sorbate~0.1–0.4%

Irritant · medium

Irritation risk: Medium

A preservative

More about Potassium sorbate

Phenoxyethanol~0.1–0.4%

Formula

Irritation risk: Low

A preservative. It helps prevent bacterial growth in cosmetic products

More about Phenoxyethanol

Sodium dehydroacetate~0.1–0.35%

Irritant · medium

Irritation risk: Medium

A preservative

More about Sodium dehydroacetate

Limonene~0.05–0.25%

Irritant · high

Irritation risk: High

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

More about Limonene

Ingredient list view

Peg-8, Sodium bicarbonate, Butylene glycol, Glyceryl stearate se, Silica, Polylactic acid, Ascorbyl palmitate, Tocopheryl acetate, Sodium ascorbyl phosphate, Helianthus annuus seed oil, Daucus carota sativa seed oil, Daucus carota sativa root extract, Beta-carotene, Ci 40800, Parfum, Water, Linoleamidopropyl pg-dimonium chloride phosphate, Polyquaternium-10, Hydroxyethylcellulose, Sodium ascorbyl phosphate, Polysorbate 20, Peg-40 hydrogenated castor oil, Trideceth-9, Sodium hydroxide, Disodium edta, Lactic acid, Parfum, Potassium sorbate, Phenoxyethanol, Sodium dehydroacetate, Limonene

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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
	Erno LaszloDual Phase Vitamin C-PeelYOUR PRODUCT	LöwengripPurify my Skin Facial Scrub	Paula's choiceAdvanced Pore-Refining Treatment 4% BHA	Peter Thomas RothPeptide 21 Amino Acid Exfoliating Peel Pads - 60 Pads
Match	—	52%	52%	48%
Price	—	$9.64	—	$55.00
Shared key ingredients	—	0 of 2	1 of 2	0 of 2
Key difference	—	Niacinamide	Salicylic Acid	Salicylic Acid
Irritancy	High	Medium	Medium	High
Drying alcohol	—	—	—	—
	View product	Shop	Shop	Shop

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Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 17 studies and safety reviews.

1
Sodium ascorbyl phosphate shows in vitro and in vivo efficacy in the prevention and treatment of acne vulgarisncbi.nlm.nih.gov
2
Sodium ascorbyl phosphate in topical microemulsionssciencedirect.com
3
Final report of the safety assessment of L-Ascorbic Acid, Calcium Ascorbate, Magnesium Ascorbate, Magnesium Ascorbyl Phosphate, Sodium Ascorbate, and Sodium Ascorbyl Phosphate as used in cosmeticseuropepmc.org
4
Regulation of collagen synthesis in human dermal fibroblasts by the sodium and magnesium salts of ascorbyl-2-phosphatekarger.com
5
Comparison of clinical efficacies of sodium ascorbyl phosphate, retinol and their combination in acne treatmentonlinelibrary.wiley.com
6
Application of l-ascorbic acid and its derivatives (sodium ascorbyl phosphate and magnesium ascorbyl phosphate) in topical cosmetic formulations: stability studiesinis.iaea.org
7
Sodium L-ascorbyl-2-phosphate 5% lotion for the treatment of acne vulgaris: a randomized, double-blind, controlled trialonlinelibrary.wiley.com
8
Effect of Olive and Sunflower Seed Oil on the Adult Skin Barrier: Implications for Neonatal Skin Careonlinelibrary.wiley.com
9
Topically Applied Sunflower Seed Oil Prevents Invasive Bacterial Infections in Preterm Infants in Egyptjournals.lww.com
10
Effect of topically applied lipids on surfactant-irritated skinonlinelibrary.wiley.com
11
Impact of topical oils on the skin barrier: possible implications for neonatal health in developing countriesonlinelibrary.wiley.com
12
New Claims for Wild Carrot (Daucus carota subsp. carota) Essential Oilncbi.nlm.nih.gov
13
Augmentation of sebaceous lipogenesis by an ethanol extract of Grifola frondosa (Maitake mushroom) in hamsters in vivo and in vitroonlinelibrary.wiley.com
14
Amended Safety Assessment of PEGylated Oils as Used in Cosmeticscir-safety.org
15
Epidermal and dermal effects of topical lactic acidncbi.nlm.nih.gov
16
Dual Effects of Alpha-Hydroxy Acids on the Skinpdfs.semanticscholar.org
17
4 Final Report on the Safety Assessment of Sodium Dehydroacetate and Dehydroacetic Acidjournals.sagepub.com

Erno LaszloDual Phase Vitamin C-Peel

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