I am not familiar with chemicals (I am a
mechanical engineer), but I looked up on the
internet for some info. I thought this website
was the best one which tells you exactly how
lipstick is made, along with some other
interesting things that answer your questions.
Here's a few paragraphs on the hazards of
Cosmetics are typically used directly on
human skin and consequently a large dermal
exposure is expected. Some are used near
mucous membranes (e.g. eyes and mouth) which may
increase absorption of the substances or
repetitively on large skin surfaces e.g. lotion
for babies/infants. Examples include lipstick,
perfume, shampoo, make up, deodorants, sun tan
lotion, and toothpaste. Adverse effects have been
attributed to some of the substances traditionally
used in cosmetics in low concentration. In high
concentrations, these substances show mutagenic,
allergenic and reproductive toxicity, e.g.
isopropyl alcohol, musk xylenes, DEHP.
Allergy is the most common adverse effect
related to cosmetics often caused by preservatives
and fragrances. A reason for concern is
supported by the fact that the incidence of
cosmetic allergy is increasing.
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