80.Restricted ingredients in cosmetic and skin care products

-
Image
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.
Post a Comment

59.surfactant_4

-

The characters of surfactant


The characters of surfactant

Decrease the surface tension
The interfacial tension reaches the lowest value at the saturation of CMC (Critical micelle concentration). It also is an indicator to design the suitable surfactants adding in detergents.
 Solubilization
It means two different substances are immiscible in the beginning. They will be miscible after adding the third substance. It is called solubilization. For cosmetics and skincare products, they usually add surfactants as the third substance. The spice is immiscible with water, for example. Adding the suitable surfactant in spice and water for solubilization become lotion products.    
Emulsification
The two liquids are immiscible originally. But adding the third substance will let one of the two liquids become 0.2-50u particles separated in the other liquid.
The phenomenon is called emulsification. The mixed liquid is emulsion. And the third substance is called emulsifier. For cosmetics and skincare products, the third substance is surfactant.
How to maintain the stable emulsification is a crucial consideration for cosmetics and skincare products.

The emulsification has two types.
1.      Oil-in-water
Oil more soluble in water
Ex. milk
2.      Water-in-oil
Water more soluble in oil
Ex. butter

---------------------------------------------------------------------------------------------
help to find the specific skincare product ingredients by "skin+" App








Comments

Post a Comment

Popular posts from this blog

76.factors for skin damage(1)

-
Image
There are many factors that cause skin damage. How does the damage result? They may be from the UV light, pollution , and so on. For example, photoaging and free radical. Then the cells are influenced.   photoaging Sunlight will cause phtoaging. Chronically irradiated skin is metabolically hyperactive, thus giving rise to epidermal hyperplasia and neoplasia , increased production of elastic fibers (solar elastosis), accelerated breakdown and synthesis of collagen , and enhanced inflammatory processes. If DNA damaged and a mutation occurs in the gene, the keratinocytes may lose their ability. Free radical and antioxidants Stratum corneum is frequently and directly exposed not only to UVR but also to other outside forces such as air pollutants, chemical oxidants, smoking, and microorganisms . They are the resources of free radicals . If the protection is insufficient, oxidative damage may occur . Then the chronic accumulation of such deviated cell components may result in t
Read more

75.The relations of UV light and the molecular in the skin

-
Image
The relations of UVlight and the molecular in the skin How do light damage skin? Light consists of a spectrum of photons which contain energy that vary according to the wavelength.  The light interacts on the molecular and then changes their chemical structure or on the subatomic level by creating free radicals. Otherwise, not only UV light but also green, blue, and violet light can damage cells. A photon’s energy can be absorbed into the molecule which is then altered. As the absorption of energy, it can also result in electron changes with the generation of free radicals. A free radical is in fact simply an atom with an unpaired electron that starts up a destructive concatenation of chemical reactions. It may end up causing damage in the cell membranes or in the DNA of the cell. The following are the reaction after exposure to UVB, UVA, and blue light. The influence of increased free radical activity DNA strand breaks occur from increased free radical activity. W e
Read more

80.Restricted ingredients in cosmetic and skin care products

-
Image
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.
Read more