On the combination of glycolic acid and kojic acid
Medical research has often involved the question of whether glycolic acid and kojic acid can be used together. The two have their own functions in skin care.

Glycolic acid belongs to the family of fruit acids, with small molecules, which can reach the deep layers of the skin smoothly. Its function is to loosen the adhesion between keratinocytes, so that the old and waste keratin can be quickly exfoliated, and the skin will be rejuvenated, with fine texture and bright color. And it can promote the regeneration of collagen in the dermis and slow down the aging process of the skin.

Kojic acid is obtained from microbial fermentation and specializes in inhibiting the activity of tyrosinase. This enzyme is the key to melanogenesis. If kojic acid inhibits it, melanin synthesis will be blocked, skin pigmentation will gradually fade, and skin tone will be even.

As for whether the two can be used together, it is necessary to consider in detail. Glycolic acid thins the stratum corneum of the skin, causing its defense to temporarily decrease, and the skin may be sensitive. Although kojic acid has a good effect on suppressing blackness, some people use it, and there are also worries about allergies. If the two are used together, the skin will be irritated or increased.

Therefore, before using them together, when the skin is sensitive, take a small amount of glycolic acid and kojic acid products, apply them to the wrist or behind the ear, and wait for a few days to see if there is redness, swelling and itching. If there is no abnormality And the dosage should be small at the beginning, and the frequency should be sparse. If you use it every few days, wait for the skin to adapt, and then adjust the dosage and frequency.

When using it in combination, sun protection is essential. Both glycolic acid and kojic acid make the skin more sensitive to light. If exposed to sunlight, not only will the effect be difficult to show, but it will increase the risk of pigmentation spots. When going out, you must use a parasol and a hat, and apply a high-power sunscreen to keep the skin comprehensive.

In short, the combination of glycolic acid and kojic acid may have a synergistic effect on skin beauty. However, based on skin tolerance, it can be done cautiously to avoid harm and benefit, and obtain the fruit of skin rejuvenation.