On the effect of glycolic acid and lactic acid on dark spots
Everyone wants to get rid of dark spots. Glycolic acid and lactic acid are quite effective here, but compared with the two, each has its own length and each has its own shortcoming.

Glycolic acid belongs to the class of fruit acids with the smallest molecule. It can quickly penetrate the surface of the skin, activate the metabolism of keratin, and make the old waste keratin dissociate quickly. The cause of dark spots is mostly related to keratin accumulation and pigmentation. Glycolic acid can not only promote keratin renewal, but also fade the color of dark spots. And it can activate the vitality of skin cells, help collagen regenerate, make the skin firm and shiny, and improve dark spots. However, if it is slightly stronger, if people with sensitive skin use it, it may cause redness and tingling. Therefore, people with sensitive skin need to be cautious before use, and it is better to try it on a small scale.

Lactic acid is also a fruit acid family, and its molecules are slightly larger than glycolic acid. Lactic acid is mild, can moisturize the skin, and increase the skin's water retention power. For dark spots, lactic acid can slow down keratin metabolism and inhibit the activity of tyrosinase. This enzyme is related to pigment production. If the activity is inhibited, it will be difficult to accumulate pigment, and the color of dark spots will gradually lighten. Because of its mildness, it is suitable for a wide range of skin, that is, people with sensitive skin can also tolerate it. However, compared with glycolic acid, the speed of keratin renewal is slightly slower, and the effect of dark spot improvement may take longer.

If the skin is strong and wants to remove dark spots quickly, glycolic acid can be the top choice. However, it needs to be used according to the law to prevent skin damage. If the skin is delicate and sensitive, and the method of gentle light spots is sought, lactic acid is more suitable, persistent, and effective. In short, choosing glycolic acid or lactic acid to treat dark spots should be determined according to the characteristics of the individual skin, and it should be done cautiously to obtain the ideal effect and whiten the skin.