On whether glycolic acid can remove hand tanning
If you want to know whether glycolic acid can remove hand tanning, you need to study the reason. Glycolic acid belongs to the class of fruit acids and has many properties.

It can loosen the connection between keratinocytes, make the surface aging keratin shed, and the skin can be renewed. For the hand, if the stratum corneum thickens and melanin deposits due to sun exposure, glycolic acid can peel off the old waste keratin, or cause the melanin on the surface of the skin to go away, showing a fair state, which seems to help reduce the appearance of tanning.

When the skin tans, melanin production is the key. Melanin cells produce melanin due to ultraviolet stimulation to protect the skin. Although glycolic acid can affect the stratum corneum, its effect on the deep mechanism of melanocyte production of melanin may be limited. If glycolic acid alone is used to remove hand tanning without sun protection, and ultraviolet rays continue to stimulate, melanin will continue to be generated, and the effect of removing black will not last.

Furthermore, glycolic acid has a certain degree of irritation. The skin of the hands or is slightly more resistant to irritation than the face, but individual skin types are different. Some people have sensitive skin, and glycolic acid may cause discomfort in the hands, such as redness, tingling, itching, etc. If such a situation occurs, it will not only fail to improve tanning, but also hurt the skin.

Therefore, glycolic acid may have a certain auxiliary effect in removing hand tanning, which can renew the surface of the skin and reduce the tanning color. However, if you want to achieve the purpose of ideal blackening and nourishing the skin of your hands, you should cooperate with sunscreen and choose products containing glycolic acid reasonably according to your own skin type, which is a comprehensive way.