Today there are two things, one is glycolic acid (Glycolic Acid), and the other is niacinamide (Niacinamide). In the order of use, glycolic acid should precede niacinamide.

Glycolic acid is active, can refresh the skin, make the skin smooth, promote metabolism and radiance. However, it is strong, or has skin intolerance. Therefore, when using it, it is necessary to review the condition of the skin and gradually increase the amount to suit it.

Niacinamide is multi-potent. It can even the skin tone, inhibit the movement of melanin, and make the skin shiny; it can also strengthen the screen of the skin and protect it from external evil. However, if it is used out of order with glycolic acid, or causes skin discomfort, the effect will also be reduced.

Therefore, when taking care of the skin, glycolic acid must be preceded by niacinamide, and step by step, so that the two can complement each other, receive the best effect on the skin, and make the skin radiant and healthy.