When it comes to the use of nicotinamide and glycolic acid
In the way of skin care, nicotinamide and glycolic acid are both commonly used agents. When to use it, it is very particular.

Nicotinamide has a wide range of effects. It can strengthen the skin's barrier, making the skin tough and less disturbed by the outside world. And it can inhibit the transfer of melanin, brighten the skin's color, and reduce the appearance of pigmentation. If the skin is rough and dull, and the barrier is slightly damaged, nicotinamide can be used. It is especially suitable in the morning, because it can help the skin resist daytime pollution and ultraviolet rays, and strengthen protection.

Glycolic acid is a type of fruit acid, which can exfoliate the skin, exfoliate the old skin, and make the new skin glow out, which is more smooth and delicate. If the skin is exfoliated, acne occurs frequently, or fine lines appear, glycolic acid can solve its worries. However, its sex is stronger, and it is better to use it at night. Because the skin has strong repair power at night, it can reduce its irritation.

However, when using both, you need to be careful. Glycolic acid makes the skin thinner and more sensitive, and niacinamide may conflict with it. If you must use it in combination, try a small area first to see how the skin should apply. And it should be used every few days, do not apply thickly at the same time.

In short, skin care drugs should be selected according to the condition of the skin, and the agent should be selected at the time and carefully, so that the skin can be radiant and healthy.