Glycolic Acid
Also known as: Hydroxyacetic Acid, AHA, Alpha Hydroxy Acid
Water-soluble AHA that exfoliates dead skin cells to improve texture and radiance.
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Get the appWhat it does
Glycolic acid dissolves the bonds between dead skin cells on the surface, promoting gentle chemical exfoliation. It penetrates the stratum corneum more effectively than larger AHAs due to its smallest molecular size. Regular use can improve skin texture, reduce fine lines, and enhance product absorption.
Benefits
- Smooths texture and reduces roughness
- Fades hyperpigmentation and post-inflammatory marks
- Stimulates collagen production over time
- Enhances penetration of other actives
- Brightens dull, congested skin
Who it suits
- Oily and combination skin
- Dull or congested skin
- Hyperpigmentation and acne scars
- Sun-damaged skin
- Most skin types at low concentrations
How to use
Apply to clean, dry skin in the evening, starting once weekly and gradually increasing frequency. Follow with hydrating toner, serums, and moisturizer; always use SPF in the morning.
Pairs well with
Hyaluronic acid, Niacinamide, Peptides, Vitamin C
Be careful pairing with
Other AHAs/BHAs (same night), Retinoids (same night), High concentrations of vitamin C (pH dependent)
Safety & cautions
Start at low concentrations (5-10%) and use 2-3x weekly to minimize irritation, redness, or sensitivity. Always use SPF 30+ during the day as exfoliation increases sun sensitivity. Avoid if skin is compromised or highly reactive.
Educational information, not medical advice. Concentration and formulation change how an ingredient behaves.