On the use of retinol and glycolic acid in sequence
Looking at the way of skin care, retinol (Retinol) and glycolic acid (Glycolic Acid) are both key agents. However, the use of the two in sequence is related to the effect and skin comfort, which cannot be ignored.

Retinol can promote cell renewal, increase collagen production, make the skin firmer and reduce fine lines. However, it is strong in nature, or cause skin sensitivity and dryness. Glycolic acid is a fruit acid, which can dissolve keratin, clear pores, brighten skin tone, and may also make the skin temporarily sensitive.

If the skin has strong tolerance and wants to radiate the skin first, you can apply glycolic acid first. After cleansing, when the face is dry, take an appropriate amount of glycolic acid products and apply it evenly to avoid the eye area. After a while, rinse off with water. Glycolic acid can exfoliate and open the skin's absorption channel. Subsequent use of retinol can increase its effect. However, this order may increase muscle and skin irritation. Beginners should be careful and test sensitivity on a small scale first.

If the skin is sensitive or weakly tolerated, take retinol first. Because of its mild effect, first condition the skin and increase tolerance. After cleansing at night, apply toner, take a small amount of retinol products, gently apply to the face, and open evenly. When the skin adapts to retinol, add the amount or combine with glycolic acid as appropriate. The method of combined use can be used several days apart, such as using retinol on Mondays, Wednesdays, and Fridays, and glycolic acid on Tuesdays, Thursdays, and Saturdays, so that the skin has a buffer.

In short, the order of use of retinol and glycolic acid is determined according to the characteristics of the skin. Check the skin type carefully first, then choose the appropriate order, supplemented by patience and care, in order to protect the skin in good condition and achieve the purpose of maintaining and beautifying the skin.