On the Application of Retinol over Glycolic Acid
People in modern times have much research on the way of skin care. Glycolic acid and retinol are both ingredients used in skin care, but when the two are used together, retinol is placed on top of glycolic acid, and the benefits cannot be ignored.

Glycolic acid is a type of fruit acid, which has the ability to exfoliate. It can exfoliate the old waste keratin on the surface of the skin, make the skin smoother and more delicate, and can promote the metabolism of the skin, which helps to improve the dullness of the skin tone. However, it is more intense, and after use, the skin may be temporarily sensitive and fragile.

Retinol can effectively promote collagen production, reduce wrinkles, improve skin elasticity, and also improve skin problems such as acne. However, this ingredient also has certain irritation, or cause skin redness, dryness, etc.

If retinol is used on top of glycolic acid, it should be used with caution. Glycolic acid has thinned the stratum corneum of the skin, and the skin's defense has decreased. At this time, retinol is added, and the two irritations are superimposed, which may be difficult for the skin to bear. In light cases, the skin is red and itchy, and in severe cases, skin inflammation may be exacerbated.

If you want to use it like this, you should first ensure that the skin is well tolerated. At the beginning, it should be tried on a small scale and at a low concentration to observe the skin's reaction. If the skin adapts, then gradually expand the scope of use and increase the frequency of use. And when using, it is appropriate to use it at night, because of daytime ultraviolet radiation, or to enhance the stimulation of the skin. At the same time, be sure to do a good job of skin moisturization and sun protection to protect the health of the skin.

In short, retinol is used on top of glycolic acid, although it may get better skin care effect, but there are risks involved. Users should choose carefully according to their own skin conditions to achieve the purpose of maintaining the skin without harm.