There
are a large number of known and probable carcinogens. Some, but not all, products containing
known carcinogens have been removed from sale; older products that precede such bans or those
whose makers have successfully campaigned to keep them on the market (such as tobacco products)
may still be found in peoples homes. Products containing probable carcinogens may continue to be
sold while scientific studies are being conducted to gather further information about their
involvement in causing disease.
Two common chemicals that may cause cancer by
disrupting hormones are butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT). They
are often found as additives in cosmetics, such as lipstick, in which they serve as
preservatives or stabilizers.
Other common hormone-disrupting ingredients are
parabens. This group includes propylparaben, isopropylparaben, butylparaben, and
isobutylparaben. This preservative is found in makeup, moisturizers, shampoos, conditioners,
lotions, and shaving cream, among other products. Sunscreen is among the products most likely to
be labeled or advertised as paraben-free.
Siloxanes (some of which end in
the suffix -methicone) also disrupt hormones. These chemicals, used to
soften and moisturize, may be found in hair care products and deodorants.
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