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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56.surfactant_2

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Main functions of surfactant in cosmetics

Main functions of surfactant in cosmetics
1. Stable the cosmetic
It is as an emulsifier to reduce the interfacial tension of water and oil and increase the stability of cosmetics and skin care products.
2.   As the main ingredient of cosmetics
Shampoo, body washes and shower gel are to remove dirt. The main ingredients are surfactants.

The key points of surfactant
1.  has hydrophilic/ lipophobic and lipophilic/ hydrophobic at the same time
2.  The molecular weight is over 200
3.  The molecular weight of hydrophilic almost equals to molecular weight of lipophilic
Ex 1. Ch3(CH2)2COO-Na+: COO-Na+ (hydrophilic) is far larger than CH3(CH2)2.( lipophilic) It can’t be a surfactant.
Ex 2. CH3(CH2)14OH: CH3(CH2)14 (lipophilic) is far larger than OH (hydrophilic). It can’t be a surfactant.

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