On the Myth of Glycolic Acid Causing Darkening of Skin
In recent times, the technique of skin care has become more and more popular, and glycolic acid has become increasingly popular in the field of skin care. However, there are rumors in the market that glycolic acid can cause skin color to deepen. This is a big myth.

Glycolic acid belongs to the family of alpha-hydroxy acids. Its molecules are small and can penetrate the surface of the skin unimpeded, reaching the depths of the stratum corneum. The function of glycolic acid in the skin is to promote the metabolism of keratinocytes. The stratum corneum of the skin has been around for a long time, and old cells have accumulated, resulting in dull skin tone and rough skin. Glycolic acid is like diligent work, gently loosening the connections between cells, causing old keratin to fall off naturally, and the surface of the skin to be renewed and rejuvenated, rather than darkening as rumored.

Furthermore, glycolic acid can stimulate the synthesis of collagen in the dermis. Collagen, the scaffold of the skin, is rich in content, making the skin full, firm and elastic. With age, collagen production gradually slows down, and the skin is now loose and wrinkled. Glycolic acid helps collagen regenerate and return the skin to a youthful appearance, which has nothing to do with deepening the skin tone.

As for the rumors of darkening the skin tone, it may be due to improper use. If the user does not apply glycolic acid products excessively according to the product instructions, or does not take good sun protection measures, the skin may be irritated and ultraviolet rays may attack, and post-inflammatory pigmentation may indeed occur. But this is due to the wrong way of use and the lack of sun protection, not the fault of glycolic acid itself. If glycolic acid products are used in a standardized manner, step by step at appropriate concentrations, and strict sun protection during the day, glycolic acid will become a good aid for the skin to be bright and tender, not the culprit for the deepening of the skin tone.

To sum up, the theory that glycolic acid causes darkening of the skin tone is a myth. Only by being reasonable and using it well can you enjoy the benefits of glycolic acid in skin care.