Works for:
based on ingredients and %- Moisturizing
- Evens skin tone
- Anti-oxidation
Can it cause trouble?
- Irritation risk: high
- Comedogenic risk ingredients: 2
Key actives
Product Summary
"ZO Skin Health - Retinol Skin Brightener 0.25%" is effective for: Moisturizing and Evens skin tone
Ingredient callouts
- this product contains an effective form of Retinoids (vitamin A): retinol 0.25% (declared). 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.
- Humectants (acetyl glucosamine 0.50% - 0.75% and glycerin 4.00% - 4.90%). These ingredients help attract water to the upper layer of the skin and improve the skin hydration.
Price
The product retails for 114.99£ in the United Kingdom and for 110.00$ in the United States.
For a detailed price comparison: click here.
Works for
Anti-oxidation
This product contains antioxidants (glutathione, 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).
A peptide that can help neutralize free radicals in skin and reduce melanin production resulting in skin lightening effect and reduction in hyperpigmentation. It can also help attract moisture to the upper layer of the skin
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
An essential oil. Can be irritating. Can become an allergen with oxidation
A vitamin C derivative that is more stable but less potent than pure form of vitamin C. Has a potential to boost collagen production, nutralise free radicals and reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in products
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.
An emollient that helps soften the skin
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.
Evens skin tone
What does the product description say?
A retinol-based solution that rapidly improves the appearance of uneven skin tone for a brighter, clearer and smoother complexion.
Source: Zo Skin Health
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 acetyl glucosamine, glutathione. 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.
An effective moisturizing ingredient that also has been shown to be effective in evening out the skin tone and reducing hyperpigmentation. It can help somewhat reduce wrinkles in skin
A peptide that can help neutralize free radicals in skin and reduce melanin production resulting in skin lightening effect and reduction in hyperpigmentation. It can also help attract moisture to the upper layer of the skin
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
A vitamin C derivative that is more stable but less potent than pure form of vitamin C. Has a potential to boost collagen production, nutralise free radicals and reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in products
Moisturizing
This product contains good ingredients to attract water to the upper layer of the skin. These ingredients are called "humectants": glycerin, caprylyl glycol.
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. If the air is dry, humectants can speed up the moisture loss from the skin. This is why it is a good idea to use another product on top of this one to help "seal in" the moisture (look for ingredients like dimethicone, squalane, oils and butters).
The following ingredients in this product are especially good for supporting the skin barrier and helping with the hydration level: acetyl glucosamine
A good moisturizing plant oil. Due to the high linoleic acid content, it helps soften the upper layer of the skin, reduce water loss and support skin barrier function
A peptide that can help neutralize free radicals in skin and reduce melanin production resulting in skin lightening effect and reduction in hyperpigmentation. It can also help attract moisture to the upper layer of the skin
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
An effective moisturizing ingredient that also has been shown to be effective in evening out the skin tone and reducing hyperpigmentation. It can help somewhat reduce wrinkles in skin
A non-drying alcohol. Works as an emollient. Helps water and oil mix together and creates a nice product texture
A silicone that helps improve the product texture and spreadability. Can absorb oil creating a short-term mattifying effect on the skin
Helps soften the upper layer of the skin
A non-drying alcohol that works to soften the skin and stabilize product formulations helping oil and water mix together
A silicone that serves as an emollient. Helps create a nice non-greasy feels
Used to preserve products, dissolve other ingredients and create a nice product texture
Helps preserve products and creates a nice product texture
An emollient that helps soften the skin
Used mostly for creating emulsions - helping oil and water mix together. Helps soften the upper layer of the skin
How honest is this product?
| Promise | Can it deliver? |
|---|---|
| Moisturizing | |
| Evens skin tone |
Total Promises Fulfilled score: 100/100.
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Potential irritants
Comedogenic ingredients
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| Product | Similarity | Price | Irritancy |
|---|---|---|---|
 ZO Skin Health Retinol Skin Brightener 0.25% | Current | $93.16 | |
Exuviance Professional 0.3% Retinol Serum | 90% | $41.82 | |
 Dr Naomi Skin Vitamin Amen | 83% | $139.00 | |
 Biopelle KNR Serum | 82% | $126.00 | |
NeoRetin Serum Booster Fluid | 82% | - | |
 PCA SKIN Intensive Age Refining Treatment 0.5 Percent Pure Retinol Night | 78% | $101.00 |
Key Actives
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
An effective moisturizing ingredient that also has been shown to be effective in evening out the skin tone and reducing hyperpigmentation. It can help somewhat reduce wrinkles in skin
A vitamin C derivative that is more stable but less potent than pure form of vitamin C. Has a potential to boost collagen production, nutralise free radicals and reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in products
A peptide that can help neutralize free radicals in skin and reduce melanin production resulting in skin lightening effect and reduction in hyperpigmentation. It can also help attract moisture to the upper layer of the skin
A silicone that helps improve the product texture and spreadability. Can absorb oil creating a short-term mattifying effect on the skin
An emollient that helps soften the skin
A good moisturizing plant oil. Due to the high linoleic acid content, it helps soften the upper layer of the skin, reduce water loss and support skin barrier function
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
Potential irritants
Can be drying and contribute to skin irritation. Used in formulars to dissolve other ingredients, create a thinner product consistency or for its antibacterial properties
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
An essential oil. Potential allergen and can be irritating. It has some anti-bacterial properties
An essential oil. Can be irritating. Can become an allergen with oxidation
A common frangrance that can easily irritate skin, especially if exposed to air, light or heat
Used to preserve products, dissolve other ingredients and create a nice product texture
A vitamin C derivative that is more stable but less potent than pure form of vitamin C. Has a potential to boost collagen production, nutralise free radicals and reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in products
Helps water and oil in the product mix well together and improves product texture
Helps preserve products and creates a nice product texture
A peptide that can help neutralize free radicals in skin and reduce melanin production resulting in skin lightening effect and reduction in hyperpigmentation. It can also help attract moisture to the upper layer of the skin
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.
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.
Comedogenic ingredients
A non-drying alcohol. Works as an emollient. Helps water and oil mix together and creates a nice product texture
A good moisturizing plant oil. Due to the high linoleic acid content, it helps soften the upper layer of the skin, reduce water loss and support skin barrier function
All ingredients
A silicone that helps improve the product texture and spreadability. Can absorb oil creating a short-term mattifying effect on the skin
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
An emollient that softens the skin and helps prevent moisture loss.
A silicone that serves as an emollient. Helps create a nice non-greasy feels
A non-drying alcohol. Works as an emollient. Helps water and oil mix together and creates a nice product texture
A non-drying alcohol that works to soften the skin and stabilize product formulations helping oil and water mix together
Used to preserve products, dissolve other ingredients and create a nice product texture
A vitamin C derivative that is more stable but less potent than pure form of vitamin C. Has a potential to boost collagen production, nutralise free radicals and reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in products
An effective moisturizing ingredient that also has been shown to be effective in evening out the skin tone and reducing hyperpigmentation. It can help somewhat reduce wrinkles in skin
Helps water and oil in the product mix well together and improves product texture
Used mostly for creating emulsions - helping oil and water mix together. Helps soften the upper layer of the skin
Can be drying and contribute to skin irritation. Used in formulars to dissolve other ingredients, create a thinner product consistency or for its antibacterial properties
Helps preserve products and creates a nice product texture
Helps create a thicker or gel-like product texture. It is not a surfactant but can be used in gentle cleansing formulations
A peptide that can help neutralize free radicals in skin and reduce melanin production resulting in skin lightening effect and reduction in hyperpigmentation. It can also help attract moisture to the upper layer of the skin
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
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.
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.
Used to stabilize the product formulation and can help absorb oil
An essential oil. Potential allergen and can be irritating. It has some anti-bacterial properties
An essential oil. Can be irritating. Can become an allergen with oxidation
A common frangrance that can easily irritate skin, especially if exposed to air, light or heat
A good moisturizing plant oil. Due to the high linoleic acid content, it helps soften the upper layer of the skin, reduce water loss and support skin barrier function
Ingredient list view
Water, Cyclopentasiloxane, Glycerin, Prunus amygdalus dulcis oleosomes, Cetearyl isononanoate, Cyclohexasiloxane, Cetearyl alcohol, Steareth-20, Cetyl alcohol, Pentylene glycol, Ascorbyl glucoside, Propylheptyl caprylate, Acetyl glucosamine, Cetearyl glucoside, Lecithin, Acrylamide/ammonium acrylate copolymer, Alcohol, 1,2-hexanediol, Caprylyl glycol, Carbomer, Glutathione, Nylon-12, Polysorbate 20, Retinol, Polysorbate 80, Sodium hydroxide, Polyisobutene, Ascorbyl palmitate, Tocopheryl acetate, Disodium edta, Maltodextrin, Prunus armeniaca kernel oil, Lavandula angustifolia oil, Stachys officinalis flower/leaf/stem extract, Pelargonium graveolens flower oil, Linalool, Limonene, Geraniol, Coumarin, Citronellol, Citral, Zea mays oil, Soy isoflavones, Beta-carotene, Bht, Bha, Potassium sorbate, Sodium metabisulfite, Sodium sulfite
- Glycerol and the skin: holistic approach to its origin and functions
- The Roles of Vitamin C in Skin Health
- Stability, transdermal penetration, and cutaneous effects of ascorbic acid and its derivatives
- The effect of N-acetyl-glucosamine on stratum corneum desquamation and water content in human skin
- Glucosamine: an ingredient with skin and other benefits
- Genomic expression changes induced by topical N-acetyl glucosamine in skin equivalent cultures in vitro
- Incorporation of D-(^H)glucosamine into normal and psoriatic epidermal glycoconjugates
- Reduction in the appearance of facial hyperpigmentation by topical N-acetyl glucosamine
- The influence of alkane chain length on the skin irritation potential of 1,2-alkanediols
- Glutathione as a skin whitening agent: Facts, myths, evidence and controversies
- Glutathione for skin lightening: a regnant myth or evidence-based verity?
- Glutathione for skin lightening for dermatologists and cosmetologists
- Retinoids in the treatment of skin aging: an overview of clinical efficacy and safety
- Improvement of naturally aged skin with vitamin A (retinol)
- A comparative study of the effects of retinol and retinoic acid on histological, molecular, and clinical properties of human skin
- Final report of the cosmetic ingredient review expert panel on the safety assessment of Polyisobutene and Hydrogenated Polyisobutene as used in cosmetics
- Fragrance Compound Geraniol Forms Contact Allergens on Air Exposure. Identification and Quantification of Oxidation Products and Effect on Skin Sensitization
- Annex I: Clinical evidence regarding sensitisation to individual fragrance chemicals and to natural extracts
- Content of fatty acids in corn (Zea mays L.) oil from Ecuador
- Final report on the safety assessment of sodium sulfite, potassium sulfite, ammonium sulfite, sodium bisulfite, ammonium bisulfite, sodium metabisulfite and potassium metabisulfite