Sérum Exfoliant à l'Acide Glycolique 10%: How to Use It Safely for Brighter, Smoother Skin

Glycolic acid is one of the most effective ingredients for exfoliating the skin, but a 10% concentration can be strong if you don't use it correctly. Whether you're new to chemical exfoliants or looking to refine your routine, understanding how to apply a glycolic acid serum safely is key to avoiding irritation while achieving that coveted glow.

Typology’s Sérum Exfoliant à l'Acide Glycolique 10% combines this powerful alpha-hydroxy acid with pistachio lentisk extract, a soothing botanical that helps calm the skin. In this guide, we'll walk you through exactly how to use it, how often, and what to avoid so you get the best results without redness or peeling.

What Is Glycolic Acid and Why 10%?

Glycolic acid is a water-soluble AHA derived from sugar cane. Its small molecular size allows it to penetrate deep into the skin, where it dissolves the bonds between dead skin cells. This reveals a fresher, more even-toned layer underneath. A 10% concentration is considered high for at-home use — it's effective for tackling uneven texture, fine lines, dullness, and hyperpigmentation, but it requires a cautious approach.

The addition of pistachio lentisk extract in Typology’s formula helps offset potential irritation. This extract is known for its anti-inflammatory and antioxidant properties, making the serum more tolerable for many skin types. Still, if you have sensitive skin or are new to acids, you may want to start with a lower concentration or patch test first.

• Always patch test a new glycolic acid serum on your inner arm or behind the ear before using it on your face.

How to Incorporate Glycolic Acid Serum Into Your Routine

The golden rule with any exfoliating serum is to start slow. For the first two weeks, use the Sérum Exfoliant à l'Acide Glycolique 10% only once or twice a week, preferably in the evening. Apply it after cleansing and toning, but before moisturizing. Dispense a few drops onto your fingertips and press gently onto your face and neck, avoiding the eye area and any broken skin.

If your skin tolerates it well, you can gradually increase frequency to every other night. But never use it more than once per day, and never combine it with other strong actives like retinol, benzoyl peroxide, or high-concentration vitamin C in the same routine. Instead, alternate nights: use glycolic acid one night and your other active the next.

• Do not use glycolic acid on the same night as retinol or other exfoliants to avoid over-exfoliation.

What to Pair With Your Glycolic Acid Serum

Because glycolic acid can temporarily compromise your skin barrier, it's essential to follow up with soothing and hydrating products. After the serum has fully absorbed (wait about 5 minutes), apply a gentle moisturizer. Typology’s Routine de Soins Minimaliste includes a lightweight moisturizer that works well — it provides hydration without heavy oils that could clog pores.

During the day, always apply a broad-spectrum sunscreen with at least SPF 30. Glycolic acid makes your skin more photosensitive, so sun protection is non-negotiable to prevent burns and hyperpigmentation. For an extra hydration boost, you can also layer a hyaluronic acid serum before your moisturizer.

• Always wear sunscreen the morning after using glycolic acid — even if you stay indoors.

Common Mistakes to Avoid

One of the biggest mistakes is using too much product. A thin layer is all you need — over-application won't speed up results and will only increase irritation. Another common error is using glycolic acid on damp skin, which can intensify absorption and lead to stinging. Always apply it to dry skin after cleansing.

Also, don't combine glycolic acid with physical scrubs or cleansing brushes. The combination of chemical and physical exfoliation can easily damage your skin barrier. If you're using the Gommage Visage Éclat — Huile de rose musquée, save it for a separate day when you're not using the serum.

• Apply glycolic acid serum to dry skin only — damp skin increases penetration and risk of irritation.

Glycolic acid can transform your skin when used correctly. By starting slow, listening to your skin, and pairing it with the right moisturizer and sunscreen, you'll enjoy brighter, smoother skin without the burn. For best results, follow the routine consistently but gently, and let your skin adjust at its own pace.