An Analysis of the Combination of Glycolic Acid and Kojic Acid
Fuglycolic acid and kojic acid are both ingredients used in skin care, but whether the two can be used in combination is a matter of concern to everyone.

Glycolic acid belongs to α-hydroxy acids. It can promote the renewal of keratinocytes in the stratum corneum of the skin, make the skin surface scales fall off, and make the skin smoother and more delicate. And it can stimulate the synthesis of collagen in the dermis, which has a great effect on anti-aging and skin rejuvenation.

Kojic acid can inhibit the activity of tyrosinase, reduce melanin production, and is often used to whiten light spots.

As for the compatibility of the two, from the perspective of chemical properties, glycolic acid is acidic to a certain extent, and kojic acid is also weakly acidic. The combination of the two, or the skin's irritation is enhanced due to the superposition of acidity. For sensitive skin, special caution is required. If the skin has good tolerance, there is no discomfort after a small-scale trial, or it can be used in combination. When used together, a small dose should be used first. After the skin adapts, the dosage should be adjusted as appropriate.

To sum up, although glycolic acid and kojic acid have their own skin care capabilities, whether to use them together or not should be carefully chosen according to personal skin conditions, so as not to damage the skin.