No. 1031 - Miljøstyrelsen
No. 1031 - Miljøstyrelsen
No. 1031 - Miljøstyrelsen
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32<br />
Fate of the siloxanes<br />
The major part of the siloxanes will be disposed of to incineration or landfills<br />
with the products to which the paint or surface coating is adhered.<br />
A few per cent of the siloxanes in waterborne paints may end up in the sewage<br />
system by washing of brushes and paint pots. Besides, a minor part may be<br />
diffusively released to the surrounding by maintenance of painted surfaces.<br />
2.2.4 Cosmetics and toiletries<br />
Silicone fluids are widely used in cosmetics and toiletries for:<br />
• Hair care products (mainly conditioners and hair styling products, but<br />
siloxanes may also be used in shampoos and colours);<br />
• Antiperspirants and deodorants (mainly in stick deodorants, but siloxanes<br />
may also be used in aerosols, creams, gels and roll-ons);<br />
• Skin care products (body care, facial care and sunscreen products);<br />
• Shaving products (pre-shave and after-shave lotion and shaving foam);<br />
• Decorative and colour cosmetic products (eye makeup, foundations, lipsticks<br />
and powder);<br />
• Liquid soap and shower gels.<br />
The major use is in hair-care products and antiperspirants.<br />
About 200 siloxanes and siloxane derivatives are listed in the inventory of ingredients<br />
used in cosmetic products compiled by the European Commission<br />
(INCI 2000) (see Annex 1). The siloxanes and derivatives function in the<br />
cosmetics as emollients, antifoaming agents, viscosity-controlling agents, antistatic<br />
agents, binders, film formers, surfactants, emulsifying agents, humectants,<br />
antioxidants and additives.<br />
According to a leading producer of silicones the primary benefits for incorpation<br />
of different siloxanes into hair-styling products are as follows (Berthiaume<br />
1995):<br />
Silicone glycol copolymers: Resin plasticizer, detackifing agent<br />
Volatile silicones: Reduced tack, reduced drying time, transitory<br />
shine<br />
Dimethicone: Softness, resin plasticizer, humidity resistance,<br />
shine<br />
Phenyl modified silicones: Shine, detackifying agent, humidity resistance<br />
Aminofunctional silicones: Conditioning, softness<br />
Alkyl modified silicones: Body/volume, softness<br />
Curable fluids: Set retention, possible conditioning<br />
Silsesquioxane resins: Body/volume, set retention<br />
Siloxysilicate resins: Body/volume, set retention