ETB215 Study Guide - Midterm Guide: Hair Conditioner, Panthenol, Polydimethylsiloxane
Document Summary
Function as a moisture barrier or to attract moisture from the environment. Preservatives industry deterioration of formulas: common ingredients include, trisodium and tetrasodium edetate (edta) helps prevent the, tocopherol (vitamin e) antioxidant. Allergy is essentially an abnormal reaction by the immune system of an individual to a substance (the allergen) that normally does not cause reaction in most other people. It is much less common than contact irritation. 1% required for synthetic preservatives and 3% for natural preservatives in products: dyes/colourants - many people are allergic to red and yellow colors, sunscreen ingredients - paba, padimate o, 5. It is a typical reaction to an irritating foreign substance that is usually limited to the specific site of direct contact and usually shows up right away. Contact dermatitis does not involve a direct overactive immune response with the release of antibodies as is the case with. What factors influence penetration: thickness of stratum corneum, excessive oily skin, temperature of the skin.
