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DEA - Diethanolamine
DEA is a solvent
and detergent. It carries the possibility of the formation
of nitrosamines. Most nitrosamines are carcinogenic.
Ethyl Alchohol/Ethanol
Can cause dryness
and irritation and lets impurities be absorbed as it makes
the skin more permeable.
Formaldehyde
Still found in
cheap bath oils and bubbles baths. It is an irritant as well
as a carcinogen and a possible suspect in sensitising young
children.
Fragrance or
Parfum
Perfume is one
of the main causes of allergy and irritation in skincare products,
with watery eyes, red irritated skin and allergic reactions
all attributed to it. Most perfumes contain around 95% synthetic
chemicals. Although some people are occasionally allergic
to essential oils thie is far less common. Current legislation
does not restrict the quantities or combinations of fragrance
chemicals that maybe used in cosmetics. According to the cosmetics
industry a typical cosmetic often contains between 50 and
100 fragrances. Children in particular tend to be more sensitive
to fragrances, and can develop allergic reactions easily.
With current legislation, manufacturers do not have to state
whether phthalates are present in their fragrances or not.
Parabens
Parabens have been detected in human breast tissue and, although
not yet conclusively linked as a possible cause of breast
cancer, evidence now suggests they can act as oestrogen mimics.
This is especially worrying for women when lifetime increased
exposure to oestrogen is linked to a heightened risk of breast
cancer. Propyl paraben, has been shown to adversely affect
male reproductive functions; at the “daily intake level” currently
acceptable under EC law, it decreased daily sperm production.
A recent study by researchers at Reading University shows
that these chemicals commonly used in deodorants and other
cosmetics have contaminated the human breast. Out of 20 human
breast tumours analysed parabens were found in 18 of them.
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Phthalates
A
large family of synthetic chemicals linked to decreased fertility
and reproductive defects. In November 2002, the EU amended
the Cosmetics Directive 76/768/EEC to order the removal of
two phthalates in the very near future because of their reproductive
toxicity (DEHP and DBP). The EU previously classified both
phthalates as substances, "…which should be regarded as if
they impair fertility in humans" and substances, "…which should
be regarded as if they cause developmental toxicity to humans."
Triclosan
Used in toothpaste, soaps, household cleaning products, body
washes and vaginal washes, Swedish research in 2002 found
high levels of triclosan in 60% of human breast milk samples.
Environmentally, triclosan is also a problem, and can be converted
to dioxin (linked to cancer) when exposed to sunlight in water.
Sodium
Lauryl Sulphate
This is a foaming detergent derived
from plant (coconut, palm) or animal sources. The family includes
sodium lauryl sulphate, sodium laureth sulphate, ammonium
lauryl sulphate and ammonium laureth sulphate. The first is
the strongest, the last the weakest. SLS is highly irritating
to people with sensitive skin. Washing hair with shampoo with
SLS often results in aggravated skin on the fingers and sore
patches on the neck.
Sodium Lauryl Sulphate started its career as an industrial
degreasant and garage floor cleaner. When applied to human
skin it has the effect of stripping off the oil layer and
then irritating and eroding the skin, leaving it rough and
pitted. It is most commonly found in shampoos, soaps and toothpastes.
TEA - triethanolamine
TEA is a possible
irritant and sensitiser |