Cosmetic whitening raw materials are very many kinds, the function and principle are very different, the most common is nicotinamide, arbutin, vitamin C, kojic acid, rhododendronic acid and fruit acid, they mainly from the following angles to work: reduce the production of melanin, inhibit the transport of melanin, accelerate the metabolism of the stratum corneum.
The principle of cosmetic whitening is to prevent pigment production and dilute pigmentation for melanin. The generation and metabolism of melanin is more complex, the first stage is tyrosine under the catalysis of enzymes into eumelanin and fusomelanin, the core of this stage is tyrosinase, whitening needs to inhibit the activity of the enzyme, arbutin, vitamin C, kojic acid, rhododendronic acid have this role.
The second stage is the transfer of melanin from melanocytes to surrounding keratinocytes. The main focus of whitening is to inhibit the transfer of melanin, and niacinamide is a typical representative of this aspect.
In the third stage, melanin migrates outward with the keratinocytes to the stratum corneum and is eventually shed as the stratum corneum is shed. The focus of whitening at this stage is (if necessary) to accelerate the shedding of the stratum corneum, and both hydroxy acid and keratin have a role in this regard.
In addition, there are various plant extracts, such as glycyrrhetinic acid and glycyrrhetin, which can also play a role in the process of whitening.http://www.cosmeticrawmaterial.cn/
The principle of cosmetic whitening is to prevent pigment production and dilute pigmentation for melanin. The generation and metabolism of melanin is more complex, the first stage is tyrosine under the catalysis of enzymes into eumelanin and fusomelanin, the core of this stage is tyrosinase, whitening needs to inhibit the activity of the enzyme, arbutin, vitamin C, kojic acid, rhododendronic acid have this role.
The second stage is the transfer of melanin from melanocytes to surrounding keratinocytes. The main focus of whitening is to inhibit the transfer of melanin, and niacinamide is a typical representative of this aspect.
In the third stage, melanin migrates outward with the keratinocytes to the stratum corneum and is eventually shed as the stratum corneum is shed. The focus of whitening at this stage is (if necessary) to accelerate the shedding of the stratum corneum, and both hydroxy acid and keratin have a role in this regard.
In addition, there are various plant extracts, such as glycyrrhetinic acid and glycyrrhetin, which can also play a role in the process of whitening.http://www.cosmeticrawmaterial.cn/
