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La Roche-Posay
Glycolic B5 10% Pure Glycolic Acid Serum
A serum built around AHA and Glycolic acid, for barrier repair and brightening.
Brand price
USD 44.99 · checked 25 Sept 2026 · on the brand's site
From the brand
What the brand says about this product. Our ingredient analysis follows below.
The brand recommends it for
- Normal skin
- Sensitive skin
- Dark spots & pigmentation
How to use
Step 1: Fill dropper with serum and apply 3-4 drops in the evening on face and neck. Step 2: Apply after cleansing. Can be used alone or under a moisturizer Step 3: Use in association with SPF protection. Avoid contact with eyes and lips.
Caution
Avoid contact with eyes and lips.
What's inside
Ingredients List
2 trigger at least one check · 12 trigger none
- Denatured alcohol
- May Worsen Dryness
- May Worsen Eczema
- May Worsen Irritation
- May Worsen Rosacea
- AHA
- Glycolic acid
- Anti-Aging
- Brightening
- Dark Spots
- Exfoliating
- Smoothing
- Fatty esters (glyceryl stearate, PEG-100 stearate)
- May Worsen Seborrheic Dermatitis
Key Ingredients
Benefits
Barrier Repair3
Strengthens and restores the skin's natural barrier.
Concerns
May Worsen Seborrheic Dermatitis1
May feed the yeast involved in seborrheic dermatitis.
Ingredients Explained
Click on any ingredient to learn more about it
Aqua
Solvent
Alcohol Denat.
Antifoaming, Antimicrobial, Astringent, Fragrance, Solvent, Viscosity Controlling
Alcohol Denat. is a drying alcohol.
Learn more about Alcohol Denat. →Glycolic Acid
Buffering
Glycolic Acid is an AHA.
Learn more about Glycolic Acid →Propylene Glycol
Fragrance, Humectant, Humectant, Skin Conditioning, Solvent, Viscosity Controlling
Propylene Glycol is the aliphatic alcohol that conforms generally to the formula
Learn more about Propylene Glycol →Potassium Hydroxide
Buffering
Potassium Hydroxide is the inorganic base
Learn more about Potassium Hydroxide →Ammonium Polyacryloyldimethyl Taurate
Emulsion Stabilising, Viscosity Controlling
1-Propanesulfonic acid, 2-methyl-2-[(1-oxo-2-propenyl)amino]-, monoammonium salt, homopolymer
Learn more about Ammonium Polyacryloyldimethyl Taurate →Tranexamic Acid
Astringent, Skin Conditioning
Tranexamic Acid is tranexamic acid.
Learn more about Tranexamic Acid →Kojic Acid
Antioxidant, Bleaching
Kojic Acid is kojic acid.
Learn more about Kojic Acid →C12-13 Alkyl Lactate
Skin Conditioning, Emollient
C12-13 Alkyl Lactate isn't fungal acne safe.
Learn more about C12-13 Alkyl Lactate →Hydroxyethylcellulose
Binding, Emulsion Stabilising, Film Forming, Light Stabilizer, Viscosity Controlling
Cellulose, 2-hydroxyethyl ether
Learn more about Hydroxyethylcellulose →
Dupes
- Kiehl's Ultra Pure High-Potency Serum with 9.8% Glycolic Acid65% match
- La Roche-Posay Hyalu B5 Suractivated Serum with Hyaluronic Acid61% match
- SkinCeuticals Discoloration Defense Serum for Dark Spots61% match
- La Roche-Posay Vitamin C12 Serum60% match