On the combination of glycolic acid and nicotinamide
The way of skin care, the combination of ingredients, is related to the efficacy and skin feel, and cannot be ignored. Glycolic acid is a type of fruit acid, which has the power of exfoliating and promoting skin metabolism. It can rejuvenate the skin, and the color is uniform. However, its sex is slightly stronger. If used improperly, it may cause skin discomfort. Niacinamide can inhibit melanin transport, increase skin luster, and has the effect of repairing barrier and oil control, which is quite popular with skin care people.

Now I want to discuss the use of glycolic acid and nicotinamide mixed. Mixing the two requires a review of skin tolerance. If the skin is delicate and sensitive, if it is mixed rashly, it may cause irritation, redness, itching, and burning. Therefore, when using it for the first time, it is advisable to test the sensitivity first, take a little mixture and apply it to the wrist or behind the ear, and wait for a while to see if there is any adverse reaction.

And the proportion of preparation is also the key. If the concentration of glycolic acid is high, the stripping power is strong, and the irritation is also increased; the proportion of nicotinamide is improper, or it may affect its efficacy. Generally speaking, it is advisable to mix low-concentration glycolic acid with an appropriate amount of nicotinamide first, such as the concentration of glycolic acid is 2% - 5% and nicotinamide is 3% - 5%, and gradually observe the skin reaction. If the skin is well tolerated, you can fine-tune the ratio as appropriate, but do not overdo it.

Furthermore, the frequency of use should also be controlled. When initially mixed, it should be used every few days, until the skin adapts, and then gradually increase the frequency, but it should not be too frequent to prevent skin damage. And when using, you should do a good job of sun protection, because glycolic acid makes the skin more susceptible to ultraviolet damage, although nicotinamide has a certain protective effect, it should not be completely relied on.

In short, if glycolic acid and nicotinamide are used in combination, they complement each other and can achieve good skin care effects; if they are not properly considered, it is easy to cause skin problems. Therefore, users should be cautious to achieve the purpose of skin beauty.