On the effect of glycolic acid on underarm dullness
Recently, skin care has become more and more important to everyone, and underarm dullness has also attracted much attention. Among many maintenance methods, glycolic acid (Glycolic Acid) stands out, and its effect on improving underarm dullness is significant.

Glycolic acid belongs to the class of fruit acids, with fine molecules and strong penetration into the skin. It acts on the underarm skin, promoting keratin renewal first. Underarm skin is prone to thick keratin every day, resulting in dull complexion. Glycolic acid can loosen the connection between keratin cells, causing old waste keratin to shed, new skin to show, and make underarm skin tone gradually brighten.

Furthermore, glycolic acid can stimulate the metabolism of the skin. Metabolism is smooth, and the transport and metabolism of melanin in the skin is also accelerated. If melanin is over-deposited in the underarm skin, it will cause dullness. Glycolic acid accelerates the metabolism of melanin, thereby fading the dullness and luster, and restoring the luster of the underarm skin.

However, when using glycolic acid, it is also necessary to be cautious. Because of its certain irritation, when using it for the first time, it should be tested on a small area of skin to see if there is any discomfort, such as tingling, redness, etc. And the frequency of use should not be too high, depending on the individual skin tolerance. At the beginning, it can be used once or twice a week, until the skin adapts, and then increase the frequency moderately

In summary, glycolic acid has a good effect on improving underarm dullness. However, users need to use it scientifically and reasonably according to their own skin conditions to achieve the best maintenance effect and keep underarm skin fair and even.