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Chapter Five Test

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A solvents main function is to _________ product ingredients and allow them to work properly.*
Emulsions can be considered the delivery systems for beneficial cosmetic ingredients which are often incompatible with water.*
Emulsifiers work by:*
Most surfactants are emulsifiers and clean by having dirt stick to the hydrophobic tail which is carried away by water via the hydrophilic head.*
An emollient brings _______ to the skin.*
Name 4 active anti-aging ingredients.*
People can be the most allergic to the ____________ in a product.*
Preservatives are used to:*
Moisturizers include:*
Active ingredients can only penetrate the skin through the intercellular route.*
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