How long does it take for niacinamide whitening to be effective? Niacinamide whitening requires long-term persistence

Niacinamide is an extremely popular whitening ingredient. Most whitening skin care products contain niacinamide, and niacinamide has a great whitening effect. So, how long does it take for niacinamide to take effect on whitening?

How long does it take for niacinamide to be effective?

Niacinamide whitening is a relatively long process that requires persistence. Generally, improvements can be seen after more than 2 weeks, and obvious whitening effects will appear after one or two months. At the same time, during this period, you should also pay attention to maintaining good living habits, such as not staying up late, otherwise it will be in vain.

The whitening principle of niacinamide

Niacinamide has a whitening effect because it can inhibit the deposition of melanin and block the transfer of melanin to surface cells. It can also accelerate the shedding of keratin containing melanin, reduce the yellowing of protein after glycation, and reduce the size and number of spots. Therefore, theoretically it can reduce the formation of melanin and thus play a role in whitening the skin. However, whether the effect is significant depends on whether the ingredient content is sufficient.

Disadvantages of Niacinamide Whitening

Although niacinamide has many advantages, there are still factors that limit it. Niacinamide is unstable. In acidic and alkaline environments, niacinamide will hydrolyze into niacin. Niacin and niacinamide belong to the same vitamin B3 family, but niacin is more irritating than niacinamide. Niacinamide products contain niacin, which the skin is intolerant to after use, so skin problems are prone to occur. Currently, solving the problem of niacinamide intolerance is still an experiment. Start with low-concentration niacinamide products, slowly increase the concentration, and find your own tolerance critical point.

Does the higher the concentration of niacinamide, the better the whitening effect?

The higher the niacinamide concentration, the better! When the concentration of niacinamide is below 2%, the absorption rate increases linearly with the amount added. When the concentration exceeds 2%, the absorption rate will not increase linearly. Although the higher the added concentration of niacinamide, the better the effect, but at the same time the irritation will also greatly increase, and many people's skin simply can't stand it.