On the use of alcohols
In recent times, the method of skin care has become more and more popular. There are many doubts about the order of alcohols used, such as glycolic acid and retinol.

Retinol can promote keratin renewal, help collagen production, make the skin firm and smooth, but it is strong, or cause the skin to be sensitive and dry. Glycolic acid is a type of fruit acid, which can also exfoliate, increase skin brightness, and moisturize.

If retinol is used first, the skin has been irritated. At this time, glycolic acid is used, and the two are superimposed, which irritates too much, the skin is unbearable, and it is prone to redness, swelling, and tingling. Therefore, it is advisable to use retinol first, and then use glycolic acid when the skin adapts and the keratin is renewed in an orderly manner. At this time, the skin can not only borrow the power of retinol, but also glycolic acid to deepen care, and can avoid excessive irritation.

When using, it is advisable to use a small amount and a low concentration at the beginning, and gradually increase the dosage and concentration depending on the skin's response. And be careful during the day, because both increase the skin's photosensitivity, it is necessary to do a good job of sun protection to prevent skin damage. In this way, use them in sequence and protect them reasonably to get the good effect of skin care.