La Roche-Posay Glycolic Acid Serum 10% — Tranexamic + Kojic Acid, Vitamin B5 for Brightening and Dark Spot Reduction

La Roche-Posay Glycolic B5 Serum is a lightweight 10% glycolic acid face serum with tranexamic acid, kojic acid and vitamin B5 designed to exfoliate and help visibly reduce the appearance of dark spots and uneven skin tone.

This concentrated facial serum uses a triple-acid approach—glycolic acid, tranexamic acid (TXA) and kojic acid—plus panthenol (vitamin B5) to refine skin texture and promote a more even-looking complexion. Formulated to be suitable for multiple skin tones and sensitive skin, the oil-free, fragrance-free formula is non-comedogenic and dermatologically tested. For best results, apply in the evening and follow with daytime sun protection.

How quickly can I expect to see brighter skin?

Visible improvement in overall brightness can appear in as little as two weeks with consistent nightly use. The exfoliating action of glycolic acid accelerates surface renewal while supporting ingredients help soothe and hydrate so skin looks more radiant over time.

• Apply 3–4 drops each evening to clean, dry skin.
• Notice brighter-looking skin in about two weeks with regular use.
• Continued use over four weeks can further reduce the appearance of dark spots.

What skin concerns does this serum address?

This formula targets visible dark spots, discoloration, uneven skin tone and textured areas by combining exfoliation and pigment-targeting actives. It is intended to refine surface texture while helping to even out the complexion without heavy oils or fragrances.

• 10% pure glycolic acid for surface exfoliation and texture improvement.
• Tranexamic acid and kojic acid to help reduce the look of discoloration.
• Vitamin B5 (panthenol) to support skin comfort and hydration.

Is this safe for sensitive skin and daily use?

The formula is designed to be suitable for sensitive skin and is free from parabens, oils and added fragrance, and it is non-comedogenic and allergy tested. Because it contains a 10% AHA, introduce it gradually and always pair with daytime SPF to protect renewed skin.

• Alcohol-free and fragrance-free to minimize irritation risks.
• Start using every other night if you have high sensitivity, then increase as tolerated.
• Always apply broad-spectrum sunscreen each morning while using AHAs.

How should I add this serum into my skincare routine?

Use this serum in the evening after cleansing and before heavier creams or oils to allow the acids to work directly on skin. Keep daytime routines sun-protective and simple while the serum helps with surface renewal and tone correction.

• Evening: cleanse, apply 3–4 drops of serum, then follow with moisturizer as needed.
• Morning: cleanse, use SPF 30+ to protect exfoliated skin from UV exposure.
• Avoid mixing with other strong actives (like high-strength retinoids) without staggered use to limit irritation.

Who is this for: La Roche-Posay Glycolic B5 Serum is intended for anyone seeking a targeted treatment for visible dark spots, uneven skin tone or rough texture who wants a clinically minded formula suitable for multiple skin tones and sensitive skin. If you are new to acids or have very reactive skin, consider patch testing and introducing the serum slowly while using daily sun protection.

Ingredients

Water, Alcohol Denat., Glycolic Acid, Propylene Glycol, Potassium Hydroxide, Kojic Acid, Ammonium Polyacryldimethyltauramide/Ammonium Polyacryloyldimethyl Taurate, C12-13 Alkyl Lactate, Disodium EDTA, Hydroxyethylcellulose, Capryloyl, Salicylic Acid, Vitreoscilla Ferment.