Glycolic acid

Exfoliation: Glycolic acid gently removes dead skin cells from the surface of the skin and promotes cell renewal.
Blemishes: Glycolic acid has the effect of lightening blemishes and even skin tone, which can reduce sun spots, freckles and pigmentation.
Shrink pores: Glycolic acid can help close pores, reduce pore clogging and pimples formation, and make the skin more refreshed.
Promotes collagen production: Glycolic acid helps improve skin elasticity and firmness.
Anti-aging: Glycolic acid can reduce the appearance of fine lines and wrinkles.
Acne Treatment: It can help treat acne and prevent breakouts from forming.

It usually comes in the form of cosmetics, such as toners, serences, facial masks, etc.