80.Restricted ingredients in cosmetic and skin care products

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Restricted ingredients in cosmetic and skin care products by regulation. Ingredient Potential toxicity Hexachlorophene Neurotoxic effects Ability to penetrate human skin Mercury compounds Accumulation in the body Skin irritation Allergic reactions Neurotoxicity Bithionol Photocontact sensitization Halogenated salicylanilides Photocontact sensitization Chlorofluorocarbon propellants Hazardous to human health Chloroform Plausible carcinogenicity Vinyl chloride Plausible carcinogenicity Zirconium-containing complexes Lung toxicity Methylene chloride Plausible carcinogenicity help to find the specific skincare product ingredients by "skin+" App.
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21-.Do you know hair has period of life?

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Do you know hair has period of life?

Do you know hair has period of life?
Hairs have period. The steps are above.  otherwise, there are many reasons that will influence the period. 

l   90% of hairs are in anagen, 1-2% are in catagen, and 10-14% are in telogen.
l   The period depends on the hair follicle of body parts. For example, eyebrows are 4 months, and
the hairs on head are there to four years. The period also determines the length of hair.
l   The period is also influenced by the environment of hairs such as epidermal growth factor, etc.

The hairs fall off also by the gene. The hairs will be from terminal hairs to vellus hairs

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