ID Skin Identity Mandelic Acid 6% + Salicylic Acid 2% Anti-Blemish Peeling Solution Versus La Roche-Posay Glycolic B5 Serum Exfoliating Concentrate
Updated on February 17, 2025
Overview
What they are
These products are both vegan, fungal acne (malassezia) safe, and reef safe serums. They have a total of 4 ingredients in common
Cool Features
They both contain AHA and exfoliants
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots
Free From
They both do not contain any common allergens, fragrances, oils, parabens, silicones or sulfates
What's Inside
They both contain harsh alcohols
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
ID Skin Identity Mandelic Acid 6% + Salicylic Acid 2% Anti-Blemish Peeling Solution 12 ingredients
La Roche-Posay Glycolic B5 Serum Exfoliating Concentrate 14 ingredients
What's inside (and what isn't)
What's inside (and what isn't)
At a glance
Click on any of the items below to learn more
ID Skin Identity Mandelic Acid 6% + Salicylic Acid 2% Anti-Blemish Peeling Solution 12 ingredients
La Roche-Posay Glycolic B5 Serum Exfoliating Concentrate 14 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningAlcohol Denat.
Antimicrobial
Glycolic Acid
Buffering
Propylene Glycol
Humectant
Potassium Hydroxide
BufferingAmmonium Polyacryloyldimethyl Taurate
Emulsion StabilisingTranexamic Acid
Astringent
Kojic Acid
Antioxidant
C12-13 Alkyl Lactate
EmollientHydroxyethylcellulose
Emulsion StabilisingTrisodium Ethylenediamine Disuccinate
Panthenol
Skin Conditioning
Capryloyl Salicylic Acid
Exfoliating
Disodium EDTA
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Alcohol Denat. is an alcohol with a denaturant property. It is created by mixing ethanol with other additives.
This ingredient gets a bad rep because it is irritating and drying - mostly due to its astringent property. Astringents draw out natural oils in tissue, constricting pores and leaving your skin dried out.
However, alcohol denat. is not all that bad.
Due to its low molecular weight, alcohol denat. tends to evaporate quickly. One study on pig skin found half of applied alcohol evaporated in 10 seconds and less than 3% stayed on skin.
This also helps other ingredients become better absorbed upon application.
Studies are conflicted about whether this ingredient causes skin dehydration. One study from 2005 found adding emollients to propanol-based sanitizer decreased skin dryness and irritation. Another study found irritation only occurs if your skin is already damaged.
Small amounts of alcohol are generally tolerated by oily skin or people who live in humid environments.
The rule of thumb is if this alcohol is near the end of an ingredients list, it will probably not affect your skin much.
Also...
This ingredient has antimicrobial and solvent properties.
The antimicrobial property helps preserve products and increase their shelf life. As a solvent, it helps dissolve other ingredients.
Other types of astringent alcohols include:
Learn more about Alcohol Denat.Hydroxyethylcellulose is used to improve the texture of products. It is created from a chemical reaction involving ethylene oxide and alkali-cellulose. Cellulose is a sugar found in plant cell walls and help give plants structure.
This ingredient helps stabilize products by preventing ingredients from separating. It can also help thicken the texture of a product.
This ingredient can also be found in pill medicines to help our bodies digest other ingredients.
Learn more about HydroxyethylcellulosePropylene Glycol is an odorless, colorless liquid. As a humectant, it helps skin retain moisture. It also aids in delivering active ingredients.
Another role of this ingredient is preventing a product from melting or freezing. Propylene glycol also adds antimicrobrial properties to a product, elongating product lifespan.
This ingredient is considered an organic alcohol and commonly added into both cosmetics and foods.
Those with sensitive skin or conditions may develop a rash when using this ingredient.
Learn more about Propylene GlycolWater. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.
So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.
You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
ID Skin Identity Mandelic Acid 6% + Salicylic Acid 2% Anti-Blemish Peeling Solution 12 ingredients
La Roche-Posay Glycolic B5 Serum Exfoliating Concentrate 14 ingredients
