shevyatiwari's version from 2015-04-18 02:55


Question Answer
Moisturisers increase water content of the epidermis and stratum corneumT
Emollients only make the skin smooth and softT
Humeectants function by impairing evaporation of water to the atmopshereF, that is occlusives
Occlusives are generally wateryF, oily
Occlusives allow easy passage of waterF
Humectants attract waterT
Humectants mimic the role of dermal GAG's such as hyaluronic acidT
Glycerin, honey, sodium lactate, urea, propylene glycol, sorbitol, pyrrolidine, carboxylic acid, gelatin, hyaluronic acid, vitamins A, C, B5 and proteins are occlusivesF, humectants
Glycerin and propylene glycol are the most common occlusivesF, humectants
Glycerin and propylene glycol have the added benefit they also serve as vehicles in addition to humectant propertiesT
Urea is the most common humectant as an active ingredient commerciallyT
Topical humectants draw water from the dermis to the epidermis in favour from the enviromentT
IF humidity is >70%, humectants will draw water from the environmentT
Humectants under low humidity draw moisture from the skin and increase transepidermal water lossT
Humectants should be used in combination with occlusivesT
Humectants draw water to the dehydrated SC and epidermis, and occlusives trap the water preventing evaporation and rehydrationT

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