Ingredient
AHA
Scientific name: Glycolic Acid · Exfoliation, brightening
Glycolic acid is an AHA, a water-soluble exfoliant that works on the skin surface to loosen dead cells. That reveals a smoother, brighter look and helps with rough texture and dullness. As the smallest AHA it penetrates well, so a little goes a long way inside a balanced routine.
Smallest AHA, penetrates well, resurfaces skin.
Good for
Caution
Photosensitizing. Do NOT combine with retinoids or vitamin C in the same routine. SPF mandatory.
Best Korean products with AHA
No published products use this yet.
Good fit for
- • Rough texture, dullness, and a tired looking surface
- • Normal to oily skin that tolerates exfoliation well
- • Anyone chasing a smoother, more even glow
Worth skipping if
- • Very sensitive or dry skin may prefer a milder acid like lactic or PHA
- • A compromised barrier that needs repair before exfoliation
Frequently asked questions
› What does glycolic acid do?
Glycolic acid exfoliates the surface of the skin, loosening dull, dead cells so fresher skin shows through. Over time it smooths texture, brightens tone, and can help fade the look of shallow marks.
› Is glycolic acid too strong for sensitive skin?
It can be, since it is a small, fast-penetrating acid. Sensitive or dry skin often does better with a gentler AHA like lactic acid or a PHA, or with a low-percentage glycolic used less often.
› How often should I use glycolic acid?
Start once or twice a week in the evening, then adjust based on comfort. Do not layer it with other strong actives on the same night while you are building tolerance.
› Do I need sunscreen when using glycolic acid?
Yes. Exfoliating acids can make skin more sun-sensitive, so daily broad spectrum SPF is essential to protect your results and prevent new marks.
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