Tue Jul 19, 2016 4:27 am by vairclair1
Absorption Enhancers Mon May 17, 2010 7:30 am
sara
Novice
Privileged
Here are a list of absorption enhancers, we have to take into account toxicity level of each item, and how much is safe to get absorbed.
Some of these enhancers can be very irritant to the skin, the ones are been used widely in cosmetics are urea and propylene glycol.
I know there are few websites that promote natural products, posting claims about propylene glycol been unsafe to use but it was found by FDA’s experts, that propylene glycol can be used safely in cosmetics at concentrations up to 50%.''
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Alcohols and glycols
“A variety of solvents have been identified as 'absorption enhancers'. Ethanol, diethylene glycol, propylene glycol, manitol, hexylene glycol, polyoxyethylene glycols, among others, have been shown to increase the cutaneous permeation of inumerous compounds.”
Urea and derivatives
Urea is one of the constituents of what is known as the Natural Moisturizing Factor, shown when combined with propylene glycol to be great enhancer.
Essencial oils, terpenes and derivatives
Approved by FDA to be generally regarded safe. Although not good option for depigemntation.
There are others in the list like acetone which is very irritant to the skin.
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