HPMC can be dissolved in water to create a solution. Because HPMC is a polymer it forms a film upon drying. It also exhibits ‘thermogelling properties,’ meaning that while it is a liquid form at room temperature, but upon warming the substances it’s viscosity increases, eventually congealing to form a gel type consistency at 50-55 degrees Celsius. This property makes this ingredient very useful as a binding agent, emulsifier, surfactant, stabilizer, adhesive and in the general control of the viscosity of the product. HPMC is mostly used in bath soaps, sunscreen, shampoos and cleansers in low concentrations (typically <5%), but has been found being used at levels as high as 36% in moisturizers and night creams (Cosmetic Ingredient Review).
*Hydroxypropyl Methylcellulose/Hypromellose/ HPMC is a semi-synthetic polymer
Functions:
HPMC can be dissolved in water to create a solution. Because HPMC is a polymer it forms a film upon drying. It also exhibits ‘thermogelling properties,’ meaning that while it is a liquid form at room temperature, but upon warming the substances it’s viscosity increases, eventually congealing to form a gel type consistency at 50-55 degrees Celsius. This property makes this ingredient very useful as a binding agent, emulsifier, surfactant, stabilizer, adhesive and in the general control of the viscosity of the product. HPMC is mostly used in bath soaps, sunscreen, shampoos and cleansers in low concentrations (typically <5%), but has been found being used at levels as high as 36% in moisturizers and night creams (Cosmetic Ingredient Review).
Safety Measures/Side Effects:
The Cosmetics Ingredients Review, after performing studies on rats, have shown that HPMC is nontoxic and describes it as being “safe as cosmetic ingredients in the present practices of use and concentration.” The FDA have labelled HPMC as safe for general use, but limited in food, in which it is usually used as an alternative to animal gelatine and is labelled as food additive E464.
Recommended Products with Hydroxypropyl Methylcellulose:
Skinfinite Platinum 30spf ($32.50).
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