On the Combined Usage of Glycolic Acid and Vitamin C
Those who want to make good use of glycolic acid and vitamin C, when they understand its properties and know its methods, they can obtain its benefits and avoid its harm.

Glycolic acid belongs to the class of fruit acids, which have the ability to exfoliate, can make the old keratin on the surface of the skin fall off, make the skin new, more uniform in color, and can promote the metabolism of the skin, which is beneficial for improving skin quality. However, it is more intense, and those with sensitive skin may be intolerant.

Vitamin C, a strong antioxidant, can resist the damage of free radicals to the skin, whiten the skin, reduce pigmentation, and also help in the synthesis of collagen, making the skin more elastic.

Use the two in combination. To achieve the best effect, the first thing to do is to adapt to the skin. For those who use glycolic acid first, it is recommended to start with a low concentration, such as 2% - 5% glycolic acid products, and use it every two to three nights. After cleansing, when the skin is dry, take an appropriate amount and apply it evenly to the face, avoiding the eyes and lips. It is normal to have slight tingling and redness at the beginning of use. If it is uncomfortable, you need to stop using it. When the skin adapts to glycolic acid, you can gradually increase the frequency of use to once a day.

As for vitamin C, you can use it in the morning. First clean the face with mild cleansing products, then apply an appropriate amount of vitamin C-containing essence to the face, and pat until absorbed. Vitamin C is easy to decompose when exposed to light and heat, so strict sun protection is required after daytime use. You can apply sunscreen, go out with an umbrella, wear a hat, etc.

If you want to use both, you need to pay attention to the order. You can apply vitamin C essence first, wait for it to be fully absorbed, and then apply glycolic acid products after about fifteen to twenty minutes. In this way, you can avoid adverse reactions that may be caused by direct contact between the two, and can show their strengths, synergistically improve the skin, and make the skin fair, smooth and energetic. However, during the use process, if the skin is allergic, redness and swelling and other abnormalities, you should stop using it immediately and consult a professional dermatologist for advice.