15-05-2017, 10:14 AM
Moisturizers or emollients (/ ɒməliənts /) are complex mixtures of chemical agents specially designed to make the outer layers of skin (epidermis) softer and more flexible. Increase hydration of the skin (water content) by reducing evaporation. Natural lipids and sterols of the skin, as well as artificial or natural oils, moisturizers, emollients, lubricants, etc., may form part of the composition of commercial skin moisturizers. They are usually available as commercial products for cosmetic and therapeutic uses, but can also be made at home with common pharmacy ingredients.
Risks of Moisturizers
There are two factors to consider when evaluating the safety of a moisturizer:
1. The safety of the ingredients it contains
2. The risk of bacterial contamination
A recent study found that the application of certain moisturizers increases the incidence of skin cancer in high-risk mice, but these animals were subjected to high-dose UVB radiation for a long period of time prior to the application of moisturizers. Four popular humectants were tested, providing the same result. It is not yet known whether the same applies to humans. A fifth humectant, especially prepared without mineral oil and sodium lauryl sulfate, had no such effect.
The researchers asked Johnson & Johnson to produce this cream for the study, which the pharmaceutical company subsequently patented.
Some people are sensitive or allergic to certain chemical components, which can cause irritation, rashes and other allergic reactions.
As with most skin care products, there is a risk that moisturizers may be contaminated with bacteria that can cause disease.