On the efficacy of glycolic acid
Glycolic acid has gradually attracted much attention in the field of skin care. However, the authenticity of its efficacy is worth investigating in detail.

Glycolic acid belongs to a class of fruit acids and has unique chemical properties. Its molecules are tiny and can penetrate the surface of the skin without hindrance. Everyone says that glycolic acid is effective in rejuvenating the skin. It can accelerate the shedding of keratinocytes and peel off the old and waste keratin on the surface of the skin, as if it opens a new curtain for the skin. With long-term application, the skin can be seen to be smoother and more delicate, as if it were new.

In addition, glycolic acid can also promote the production of collagen. Collagen is a key factor in maintaining skin firmness and fullness. Glycolic acid stimulates the underlying fibroblasts of the skin, prompting it to produce more collagen. In this way, the elasticity of the skin gradually recovers, and the marks of years such as fine lines and wrinkles may be reduced.

However, the efficacy of glycolic acid is not without controversy. After some people apply it, the skin may feel uncomfortable, such as redness and tingling. This is due to individual skin tolerance. People with sensitive skin may be more sensitive to glycolic acid. Therefore, before applying glycolic acid products, it is safe to try it locally and observe the skin's reaction.

In summary, glycolic acid does have a certain effect, and may help in rejuvenating the skin and promoting collagen production. However, if you want to enjoy its benefits, you must carefully choose and apply it correctly according to your own skin condition, so as to achieve the best maintenance effect and avoid the risk of skin damage.