Traditional Skin Whitening Ingredients
Over the years, the most claimed skin whitening functional additives have: BG enzyme
, fibroin, retinoic acid, acid, mulberry, kojic acid, vitamin C, arbutin, grapefruit, Ginkgo, Scutellaria extract, ginkgo biloba, corn extract, algae extract, licorice extract, placenta extract, hydroquinone, fluorescent brighteners, certain mercury compounds.
Here are a few of the most common traditional skin whitening ingredients. Mercury, mercury compounds is one of the earliest use of skin bleaching agents, the most effective are some mercury compounds, but it will react with the skin to produce hydrochloric acid, resulting in skin peeling, and toxic accumulation, they are now prohibited for use in cosmetics. Hydroquinone, this is a skin whitening agent has been used in skin care products for a long time. It can inhibit the activity of tyrosinase, but long-term use maybe react with light and cause exogenous pigmentation spots, is now prohibited for use in skin care products. Tretinoin, according to tretinoin manufacturer, the structure is similar to vitamin A compounds, mainly make epidermal tissue remains normal state, it can activate the new and old cell metabolism, affect cell proliferation, separation, keratosis, sebum secretion, inflammation, immune response, its skin whitening effect is a resurfacing method, after smear will show up dermatitis, peeling, redness and other discomforts. Oxidizing agent, hydrogen peroxide, is a oxidative decomposition of the bleach, unstable, difficult to save, use excessive concentrations will damage the skin. Those skin whitening agents all have a more pronounced effect, but have varying degrees of skin irritation and sensitization.
Acid, is a general term for several chemicals, because most of these substances can be found in the natural fruit, so collectively referred to as "acid". Such as: the glycolic acid in sugar cane, milk lactic acid, malic acid in apples, etc. English unified representation for the AHA. Acid is through the metabolism of melanin reducing the adhesion between the cells of the skin, speed up the stratum corneum and the stratum corneum cells to achieve skin whitening effect. In 1990s, acid cosmetics throughout the world, but because of the high concentration of acid (20% concentration) can seriously damage the adhesion between the stratum corneum cells of the skin, caused the epidermis severe loss, easy to cause skin irritation, allergies and even ulceration.
Not long ago, scientists believe that the acid used in cosmetic raw material can not guarantee its safety for a long time, and exists the problem about increasing the UV damage to human body. The Scientific Committee has considered strictly limit the use of the AHA, and force the AHA-containing products labeled. Thus, the acid products, especially high concentrations of acid products exist on the skin insecurity. Aloe, various ingredients of aloe such as: polysaccharides, vitamins, trace elements are with good effects on nourishing , moisturizing, whitening skin, better to eliminate melasma, age spots and acne; may repair the connective tissue of the skin internal and external injuries, such as burns. Aloe containing aloin, is relate to inhibit the activity of tyrosinase, prevent the formation of melanin and calm, can inhibit tyrosinase activity, role in the various stages of the melanin metabolic pathway, controlling, inhibiting the formation of melanin; Aloe with good UV protection effect, prevent skin from increasing melanin caused by UV; aloe contains vitamin C, vitamin E and SOD, which can effectively scavenge oxygen free radicals and inhibit melanin production.
Source:http://www.cosprm.com
by: anelwew
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