What is Glycolic acid (AHA)?
Also known as: Glycolic Acid, AHA, Alfa hidroksi asit
Short answer
Glycolic acid is the smallest-molecule alpha hydroxy acid (AHA); it dissolves dead cells on the surface to give smoothness, glow and even tone. It is effective but can cause irritation and sun sensitivity.
What is Glycolic acid (AHA) and what does it do?
Glycolic acid is an AHA that can be derived from sugar cane. Its small molecule penetrates well and dissolves the bonds holding surface dead cells (gentle exfoliation). It is used for rough texture, dullness and superficial spots.
Benefits
By clearing dead cell buildup it makes skin instantly smoother and brighter, gradually evens tone and superficial spots, and softens the look of fine lines.
What to watch for
It is water-soluble, works on the surface and is more prone to irritation than salicylic acid; dryness, redness and tingling are common. It clearly sensitizes skin to the sun, so sunscreen is essential. Sensitive skin should start at a low level.
How to use it
Start in the evening after cleansing, 1-2 times a week. Do not stack with retinol or other acids the same night. Always use sun protection the next day.
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Frequently asked
Glycolic or salicylic acid?
Glycolic (AHA) suits dry/dull skin and surface texture; salicylic (BHA) suits oily/acne-prone skin and pores.
Can it be used daily?
Low-strength products can be daily once skin adjusts, but reduce frequency if there are signs of irritation.
Why is sunscreen essential?
AHAs make skin more sun-sensitive; without protection the risk of spots and irritation rises.
Sources
This page is for general information; it is not medical/dietary advice. Personal suitability varies by skin type, allergies and health status.