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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11-.What is skin? epidermis(3)

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What is skin? epidermis(3)

The skin has three layers. They are epidermis, dermis and subcutaneous tissues

Epidermis
Here are the layers of epidermis.
Stratum corneum/ horny layer
Stratum lucidum
Stratum granulosum/ granular layer
Stratum spinosum/ spinous layer
Stratum basale/ basal layer

Metabolism
The metabolism is the process of cell division.
Old cells move from stratum basale to stratum corneum with 15-30 days.
Then they stay at stratum corneum for 7-14 days. After that, the cells are in shape of fragments and escape from stratum corneum. The metabolism will spend 24-45 days roughly. 

From above, it will spend 2 weeks at least to see the effect of treatment.

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