PRODUCT REVIEW
Eighth Day The Resurfacing Tonic
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Product summary
What can the product work for?
Anti-aging
glycolic acid
1.1% -
1.7%
Irritation risk:
Concentration: Effectiveness: HIGH
An alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acid
gluconolactone
1.3% -
2%
Irritation risk:
Concentration: Effectiveness: HIGH
A polyhydroxy acid (PHA) that helps shed the dead cells from the skin surface revealing smoother skin. Is believed to be genter than AHAs. It helps attract water to the upper layer of the skin and can stimulate production of skin's own hyaluronic acid resulting in improved hydration levels. It has been shown to be helpful against acne and clogged pores if used consistently (e.g over a period of 12 weeks) in high enough concentration. It can help reduce fine lines and wrinkles and improve skin tone with long-term application. Can help neutralize free radicals
lactic acid
4.2% -
6.3%
Irritation risk:
Concentration: Effectiveness:
MEDIUM
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)
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Evens skin tone
What does the product description say?
Clinically-proven to improve skin texture, brighten dull skin, reduce the appearance of dark spots, minimize the look of pores, and leave skin feeling purified and more radiant.
lactic acid
4.2% -
6.3%
Irritation risk:
Concentration: Effectiveness: HIGH
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)
glycolic acid
1.1% -
1.7%
Irritation risk:
Concentration: Effectiveness: HIGH
An alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acid
gluconolactone
1.3% -
2%
Irritation risk:
Concentration: Effectiveness: HIGH
A polyhydroxy acid (PHA) that helps shed the dead cells from the skin surface revealing smoother skin. Is believed to be genter than AHAs. It helps attract water to the upper layer of the skin and can stimulate production of skin's own hyaluronic acid resulting in improved hydration levels. It has been shown to be helpful against acne and clogged pores if used consistently (e.g over a period of 12 weeks) in high enough concentration. It can help reduce fine lines and wrinkles and improve skin tone with long-term application. Can help neutralize free radicals
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Exfoliation
What does the product description say?
The Resurfacing Tonic
lactic acid
4.2% -
6.3%
Irritation risk:
Concentration: Effectiveness: HIGH
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)
gluconolactone
1.3% -
2%
Irritation risk:
Concentration: Effectiveness: HIGH
A polyhydroxy acid (PHA) that helps shed the dead cells from the skin surface revealing smoother skin. Is believed to be genter than AHAs. It helps attract water to the upper layer of the skin and can stimulate production of skin's own hyaluronic acid resulting in improved hydration levels. It has been shown to be helpful against acne and clogged pores if used consistently (e.g over a period of 12 weeks) in high enough concentration. It can help reduce fine lines and wrinkles and improve skin tone with long-term application. Can help neutralize free radicals
glycolic acid
1.1% -
1.7%
Irritation risk:
Concentration: Effectiveness: HIGH
An alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acid
Moisturizing
sodium lactate
3.5% -
5.3%
Irritation risk:
Concentration: Effectiveness: HIGH
Helps attract water to the upper layer of the skin. Is often used to adjust the pH level of the product
gluconolactone
1.3% -
2%
Irritation risk:
Concentration: Effectiveness: HIGH
A polyhydroxy acid (PHA) that helps shed the dead cells from the skin surface revealing smoother skin. Is believed to be genter than AHAs. It helps attract water to the upper layer of the skin and can stimulate production of skin's own hyaluronic acid resulting in improved hydration levels. It has been shown to be helpful against acne and clogged pores if used consistently (e.g over a period of 12 weeks) in high enough concentration. It can help reduce fine lines and wrinkles and improve skin tone with long-term application. Can help neutralize free radicals
lactic acid
4.2% -
6.3%
Irritation risk:
Concentration: Effectiveness: HIGH
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)
Show more
Anti-oxidation
gluconolactone
1.3% -
2%
Irritation risk:
Concentration: Effectiveness:
MEDIUM
A polyhydroxy acid (PHA) that helps shed the dead cells from the skin surface revealing smoother skin. Is believed to be genter than AHAs. It helps attract water to the upper layer of the skin and can stimulate production of skin's own hyaluronic acid resulting in improved hydration levels. It has been shown to be helpful against acne and clogged pores if used consistently (e.g over a period of 12 weeks) in high enough concentration. It can help reduce fine lines and wrinkles and improve skin tone with long-term application. Can help neutralize free radicals
zingiber officinale root extract
0.45% -
1%
Irritation risk:
Concentration: Effectiveness:
LOW
A plant extract that can contain an irritating essential oil. Might have some anti-oxidant effect, but evidence is lacking
camellia sinensis leaf extract
0.35% -
0.85%
Irritation risk:
Concentration: Insufficient!
Can contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation
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Honesty check
How honest is this product?
| Promise | Can it deliver? |
|---|---|
| Anti-aging | |
| Exfoliation | |
| Evens skin tone |
Total Promises Fulfilled score:
100/100.
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Can it cause trouble?
- Overall product irritation risk
- Acne & comedogenic risk ingredients: 0
Potential irritants
hamamelis virginiana bark/leaf/twig extract
1.6% -
2.4%
Irritation risk:
Works for:
Anti-inflammatory
A plant extract that can help calm down inflammation in skin. Can, however, itself be irritating
glycolic acid
1.1% -
1.7%
Irritation risk:
Works for:
Exfoliation,
Anti-aging,
Evens skin tone,
Anti-blemish
An alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acid
Show more
Comodogenic ingredients
No comodogenic ingredients detected
Similar products & dupes
| Eighth Day - The Resurfacing Tonic | Skintegra - Lumion | Bubble Skincare - Moon Walk Gentle Exfoliating Serum | hellobubble - Moon Walk GENTLE EXFOLIATING SERUM |  Dope Skin Co - AHA/BHA Exfoliating Tonic | EADEM - Cashmere Peel Gentle AHA + PHA Exfoliating Toner with 9% Lactic, Azelaic, Tranexamic Acids |  Herbivore - Milky Way 10% AHA + Oat Soothing Exfoliating Serum |  Be Minimalist - AHA PHA BHA 32% |  Herbivore Botanicals - Milky Way 10% AHA + Oat Soothing Exfoliating Serum |  Neutrogena - Skin Perfecting Dry Skin Liquid Face Exfoliant | Purest Solutions - Exfoliating and Clarifying Toner Glycolic Acid 5% AHA+BHA | |
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| Irritancy | IRRITANCY
MEDIUM
| IRRITANCY
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LOW
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LOW
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MEDIUM
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LOW
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MEDIUM
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LOW
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MEDIUM
| IRRITANCY
LOW
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MEDIUM
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Ingredients & concentrations
All ingredients
Key Actives
gluconolactone
1.3% -
2%
Irritation risk:
Works for:
Moisturizing,
Anti-aging,
Evens skin tone,
Exfoliation,
Anti-blemish,
Anti-oxidation
A polyhydroxy acid (PHA) that helps shed the dead cells from the skin surface revealing smoother skin. Is believed to be genter than AHAs. It helps attract water to the upper layer of the skin and can stimulate production of skin's own hyaluronic acid resulting in improved hydration levels. It has been shown to be helpful against acne and clogged pores if used consistently (e.g over a period of 12 weeks) in high enough concentration. It can help reduce fine lines and wrinkles and improve skin tone with long-term application. Can help neutralize free radicals
camellia sinensis leaf extract
0.35% -
0.85%
Irritation risk:
Works for:
Antibacterial,
Anti-oxidation,
Anti-aging,
Anti-blemish,
Evens skin tone,
Moisturizing
Can contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation
Show more
Potential irritants
hamamelis virginiana bark/leaf/twig extract
1.6% -
2.4%
Irritation risk:
Works for:
Anti-inflammatory
A plant extract that can help calm down inflammation in skin. Can, however, itself be irritating
glycolic acid
1.1% -
1.7%
Irritation risk:
Works for:
Exfoliation,
Anti-aging,
Evens skin tone,
Anti-blemish
An alpha-hydroxy acid (AHA) that helps to remove the dead skin cells on the surface of the skin reveling a more even, smoother complexation. It is also able to stimulate collagen production with long-term use. Could help to reduce pore congestion. It can be irritating to the skin. Apply sunscreen daily if using products with glycolic acid
Show more
Comodogenic ingredients
We couldn't find any comodogenic ingredients in this product
All ingredients
lactic acid
4.2% -
6.3%
Irritation risk:
Works for:
Evens skin tone,
Moisturizing,
Exfoliation,
Anti-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)
sodium lactate
3.5% -
5.3%
Irritation risk:
Works for:
Moisturizing
Helps attract water to the upper layer of the skin. Is often used to adjust the pH level of the product
Show more
Ingredient list view
Water, Lactic acid, Sodium lactate, Lens esculenta seed extract, Cucumis sativus fruit extract, Hamamelis virginiana bark/leaf/twig extract, Gluconolactone, Glycolic acid, Sodium hyaluronate, Panthenol, Zingiber officinale root extract, Camellia sinensis leaf extract, Aloe barbadensis leaf extract, Isopulegol, Vanillyl butyl ether, Isoceteth-20, Potassium sorbate, Sodium benzoate
Sources
- Epidermal and dermal effects of topical lactic acid
- Dual Effects of Alpha-Hydroxy Acids on the Skin
- A comparative study of gluconolactone versus benzoyl peroxide in the treatment of acne
- The Polyhydroxy Acid Gluconolactone Protects Against Ultraviolet Radiation in an In Vitro Model of Cutaneous Photoaging
- Applications of hydroxy acids: classification, mechanisms, and photoactivity
- The efficacy of glycolic acid, salicylic acid, gluconolactone, and licochalcone A combined with 0.1% adapalene vs adapalene monotherapy in mild-to-moderate acne vulgaris: a double-blinded within-person comparative study
- A polyhydroxy acid skin care regimen provides antiaging effects comparable to an alpha-hydroxyacid regimen
- The use of polyhydroxy acids (PHAs) in photoaged skin
- Blackwell Publishing, Ltd. Alpha-hydroxyacids and carboxylic acids
- An evaluation of a polyhydroxy acid skin care regimen in combination with azelaic acid 15% gel in rosacea patients
- Aging Skin: Causes, Treatments, and Prevention
- Clinical and cosmeceutical uses of hydroxyacids
- Polyhydroxy Acids (PHAs) Provide Conditioning Effects to Skin Without Increasing Sensitivity to UV Light
- Photoprotective and antiinflammatory effects of topical glycolic acid
- Glycolic acid peel therapy – a current review
- Dual Effects of Alpha-Hydroxy Acids on the Skin
- Hyaluronic acid: A key molecule in skin aging
- Hyaluronan (Hyaluronic Acid): a natural moisturizer for skin care
- Skin moisturizing effects of panthenol-based formulations
- Safety Assessment of Panthenol, Pantothenic Acid, and Derivatives as Used in Cosmetics
- Some phytochemical, pharmacological and toxicological properties of ginger (Zingiber officinale Roscoe): A review of recent research