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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48.Skin surface properties_elasticity

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There are many methods to detect the skin health, skin surface properties, skin color, skin color type, and hair conditions. They are non-intrusive.

Skin surface properties
Skin surface properties_elasticity

Elasticity of skin
The skin is composed by complex material. Collagen and elastic fibers in dermis provide the elasticity when the skin is under a constant force. 
The measurement is to apply a force to record and analysis the reaction of skin firmness.
The topography of skin
Use optical method to sketch the surface of skin.

surface profile cuts are generated via a plane of light or shadow cutting the surface at an angle. The emerging cutting curve can be observed through a microscope. In the throwing-shadows technique, the length of the shadows caused by slanted lighting characterizes the peak heights of a surface.

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