On the Compatibility of Glycolic Acid, Niacinamide and Vitamin C
The way of skin care is that the compatibility of ingredients is related to the efficacy and skin safety. Glycolic acid, niacinamide and vitamin C are all good skin care agents, but whether they can be used together needs to be investigated in detail.

Glycolic acid is a type of fruit acid, which has the ability to gently exfoliate, can rejuvenate the skin, make it delicate and smooth. Niacinamide can inhibit melanin transport, brighten the skin and adjust skin oil, stabilize the skin barrier. Vitamin C, a strong antioxidant, can resist oxygen free radicals, whiten light spots, and promote collagen synthesis.

The three are used alone, each has its own strengths. However, when compatible, you need to be cautious. Glycolic acid is acidic and can lower the pH value of the skin. Niacinamide may change to niacin in an acidic environment, and niacin may cause skin discomfort, such as redness, tingling, etc. Therefore, when glycolic acid is used with niacinamide, it should be tried on a small scale first to see if the skin tolerates it or not.

As for vitamin C, it is also acidic. When used in combination with glycolic acid, it may cause the skin to be too acidic and damage the skin barrier. And vitamin C is unstable, easy to oxidize, compatible with other substances, or affects its activity.

However, if used properly, it can also benefit. If used in time-sharing, use products containing vitamin C and nicotinamide in the morning, and glycolic acid at night. Or try low-concentration products first, gradually increase the concentration, and observe the skin reaction.

In short, the compatibility of glycolic acid, nicotinamide and vitamin C needs to be based on individual skin type, weigh the advantages and disadvantages, and be cautious in order to ensure skin health and obtain skin care effects.