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Cosmeceuticals: An emerging concept
作者: 日期:2008-2-3 10:38:08 出处:中国药妆美容网 访问次数:
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Moisturizers Moisturizers function to smooth out the age lines, help brighten, and tone the delicate skin. Moisturizers usually incorporate emollients to smoothen the skin surface by working their way into the nonliving outer layers of the skin, filling spaces between the layers and lubricating, and humectants to help skin cells absorb and retain moisture in these layers. Healthy Remedies Balancing Lotion has been created for menopausal women containing ingredients, which diminish the appearance of fine lines, and wrinkles, uplift the neck area and moisturize the dry, sagging skin. Some of those ingredients include black cohosh, soy extract, and vitamins A and E. Augmenting the skin's natural moisture balance are a nourishing complex containing hyaluronic acid and a revival complex containing green tea leaf extract, and glutathione.[7]

Bleaching agents Bleaching agents are used for bleaching/fading the various marks and act to block the formation of the skin pigment melanin. Hydroquinone is the most commonly used agent for 'bleaching' brown marks, liver spots, melasma, etc. Kojic acid, extracted from mushrooms, is a slightly less effective agent, either may be compounded with tretinoin or topical steroids, a and b-hydroxy acids.[13] As with any bleaching agent, aggressive exfoliation, and sun protection are necessary for good results. A synthetic detergent bar was developed containing hydroquinone as a skin-bleaching agent. The bar is maintained at about a pH of between 4 and 7 and includes a compressed mixture of a synthetic anionic detergent, hydroquinone, a stabilizer for hydroquinone, water, a buffer which maintains the pH of the bar and excipients such as waxes, paraffin, dextrin, and starch.[15] Similarly, a skin bleaching preparation comprising hydroquinone, tertiary butyl hydroquinone, and optionally an additional stabilizer and can additionally contain a buffer to maintain the pH between about 3.5 and 7.5.[16] Because of the maintenance of low pH and the presence of a stabilizer, hydroquinone is not oxidized and thus the product is characterized by an extended shelf life.

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Hair cosmeceuticals

The appearance of the hair is a feature of the body over which humans, unlike all other land mammals, has direct control. One can modify the length; color and style of hair according to how one wish to appear. Hair care, color, and style play an important role in people's physical appearance and self-perception. Among the earliest forms of hair cosmetic procedures in ancient Egypt were hair setting by the use of mud and hair coloring with henna. In ancient Greece and Rome, countless ointments and tonics were recommended for the beautification of the hair, as well as remedies for the treatment of scalp diseases. Henry de Mondeville was the first to make a distinction between medicinal therapies intended to treat diseases and cosmetic agents for the purpose of beautification.[17] But today's delineation of cosmetics from pharmaceuticals has become more complex through the development of cosmetics with physiologically active ingredients, i.e. cosmeceuticals. Shampooing is by far the most frequent form of cosmetic hair treatment. While shampoos have primarily been products aimed at cleaning the hair and scalp, current formulations are adapted to the variations associated with hair quality, hair care habit, and specific problems such as treatment of oily hairs,[18] dandruff[19] and for androgenic alopecia[20] related to the superficial condition of the scalp.

  
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