Kerstin Florian Intensive Renewal Glycolic 15
Works for
Anti-agingGlycolic acid, Tocopherol + 2 moreWorks well
“Helps reduce the appearance of fine lines, wrinkles and hyperpigmentation.”
This product can help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness because it contains glycolic acid.
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.
Evens skin toneGlycolic acid, Ascorbic acidWorks well
“Helps reduce the appearance of fine lines, wrinkles and hyperpigmentation.”
This product can help reduce hypepigmentation and even out the skin tone because it contains the following effective ingredients: glycolic acid
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.
ExfoliationGlycolic acidWorks well
“Uncover the natural beauty of your skin with this intensive exfoliating treatment creme based on Glycolic Acid, Vitamin C and botanicals.”
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: glycolic acid.
Can it cause trouble?
Irritancy6 strong irritants: Citrus limon fruit extract, Limonene + 4 more — patch-test recommendedHigh risk
Comedogenic1 ingredient rated 2 or more on the 0–5 pore-clogging scale1 flagged
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Ingredients
Filter by role to see what each ingredient is doing.
Water~45–55%
Glycolic acid~5.4–6.7%
- Irritation risk
- 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
More about Glycolic acidSodium hydroxide~4.1–5%
Coco-caprylate/caprate~3.1–3.8%
- Irritation risk
- Low
Helps to soften the upper layer of the skin without creating a greasy texture
More about Coco-caprylate/caprateCaprylic/capric triglyceride~2.4–2.9%
- Irritation risk
- Medium
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 triglycerideSteareth-2~1.9–2.3%
Steareth-21~1.7–2%
Glycerin~1.5–1.8%
- Irritation risk
- Low
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 GlycerinStearic acid~1.3–1.6%
- Irritation risk
- Low
Helps oil and water mix together and works as an emollient
More about Stearic acidSaccharide isomerate~0.95–1.15%
- Irritation risk
- Low
Helps attract water to the upper layer of the skin
More about Saccharide isomerateDimethicone~0.75–1.1%
- Irritation risk
- Low
A silicone that helps to reduce water loss from the surface of the skin. Can temporarily "fill in" lines and wrinkles, absorb oil, and create a nice product finish
More about DimethiconeCitrus limon fruit extract~0.55–0.85%
- Irritation risk
- High
Used as a fragrance. Can be irritating and cause photosensitivity
More about Citrus limon fruit extractCetearyl alcohol~0.6–0.9%
- Irritation risk
- Low
- Comedogenicity
- 2/5
A non-drying alcohol. Works as an emollient. Helps water and oil mix together and creates a nice product texture
More about Cetearyl alcoholCetyl alcohol~0.55–0.85%
- Irritation risk
- Low
A non-drying alcohol that works to soften the skin and stabilize product formulations helping oil and water mix together
More about Cetyl alcoholCaprylyl glycol~0.45–0.7%
- Irritation risk
- Medium
Helps preserve products and creates a nice product texture
More about Caprylyl glycolXanthan gum~0.45–0.65%
- Irritation risk
- Low
Used to create a thicker product consistency
More about Xanthan gumSaccharide isomerate~0.4–0.6%
- Irritation risk
- Low
Helps attract water to the upper layer of the skin
More about Saccharide isomeratePropylene glycol~0.3–0.6%
- Irritation risk
- High
Helps oil and water mix together and can enhance the penetration of other ingredients into the skin. It can be irritating
More about Propylene glycolBisabolol~0.25–0.5%
- Irritation risk
- Low
An active component of chamomile plant that historically has been used to calm down irritated skin. A recent study shows that bisabolol indeed can have some anti-inflammatory effect on skin, even though conclusive data is lacking. Bisabolol has a sweet floral scent and can be added to products for its aromatic properties
More about BisabololLimonene~0.25–0.45%
- Irritation risk
- High
A common frangrance that can easily irritate skin, especially if exposed to air, light or heat
More about LimoneneTitanium dioxide~0.35–0.6%
- Irritation risk
- Low
Works as a UV filter when used in high concentrations. It is photostable and is effective mostly against the UVB light, with some protection in the UVA range. In small concentrations, used for its ability to improve the color of cosmetic products. Is usually well tolerated by the skin
More about Titanium dioxideSodium hyaluronate~0.25–0.4%
- Irritation risk
- Low
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
More about Sodium hyaluronateCitrus grandis peel oil~0.15–0.3%
- 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 grandis peel oilCitrus aurantium dulcis oil~0.2–0.35%
- Irritation risk
- High
Used as a fragrance. It can be irritating and cause photosensitivity
More about Citrus aurantium dulcis oilDisodium edta~0.15–0.3%
Potassium cetyl phosphate~0.2–0.35%
- Irritation risk
- Medium
Helps oil and water mix together
More about Potassium cetyl phosphateCitric acid~0.15–0.3%
- Irritation risk
- Medium
Can work as an exfoliant but is typically used to adjust the product pH
More about Citric acidPeg-8~0.15–0.3%
- Irritation risk
- Medium
Used to create a nice product consistency
More about Peg-8Tocopherol~0.15–0.3%
- Irritation risk
- Low
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 TocopherolAscorbyl palmitate~0.1–0.2%
- Irritation risk
- Medium
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 palmitateLinalool~0.1–0.15%
Citral~0.05–0.1%
Ascorbic acid~0.05–0.1%
- Irritation risk
- High
The most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of aging
More about Ascorbic acidIngredient list view
Water, Glycolic acid, Sodium hydroxide, Coco-caprylate/caprate, Caprylic/capric triglyceride, Steareth-2, Steareth-21, Glycerin, Stearic acid, Saccharide isomerate, Dimethicone, Citrus limon fruit extract, Cetearyl alcohol, Cetyl alcohol, Caprylyl glycol, Xanthan gum, Saccharide isomerate, Propylene glycol, Bisabolol, Limonene, Titanium dioxide, Sodium hyaluronate, Citrus grandis peel oil, Citrus aurantium dulcis oil, Disodium edta, Potassium cetyl phosphate, Citric acid, Peg-8, Tocopherol, Ascorbyl palmitate, Linalool, Citral, Ascorbic acid
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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.
| Kerstin FlorianIntensive Renewal Glycolic 15YOUR PRODUCT | GlytoneEnhance Brightening Serum | DucrayMelascreen Global Serum | KinshipSelf Smooth 10% Glycolic Resurfacing Serum | |
|---|---|---|---|---|
| Match | — | 60% | 60% | 60% |
| Price | — | $34.95 | $39.35 | $30.00 |
| Shared key ingredients | — | 5 of 8 | 5 of 8 | 6 of 8 |
| Key difference | — | Azelaic Acid | Azelaic Acid | Panthenol |
| Irritancy | High | Medium | Medium | Medium |
| Drying alcohol | — | — | — | — |
| View product | Shop | Shop | Shop |
More alternatives: Dermadoctor Physical Chemistry Facial Microdermabrasion and Multi-Acid PeelPaula's choice Skin Perfecting 8% AHA Lotion
Sources cited in this review
Every concentration estimate and effectiveness label is anchored to one of these 19 studies and safety reviews.
- 1
- 2Glycolic acid peel therapy – a current reviewncbi.nlm.nih.gov
- 3
- 4Safety Assessment of Alkyl Esters as Used in Cosmeticscir-safety.org
- 5
- 6
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