Microbeads in toiletries: method 445.0 : chapter 1

Appendix 1. List of common and other potential plastics in microbeads

Table 1. Microbeads: list of common plastics used in toiletries
Item Plastic Common uses
1 Nylon-12 (polyamide-12) Bulking, viscosity controlling, opacifying (e.g. wrinkle creams)
2 Nylon-6 Bulking agent, viscosity controlling
3 Poly(ethylene terephthalate) Adhesive, film formation, hair fixative; viscosity controlling, aesthetic agent, (e.g. glitters in bubble bath, makeup)
4 Polyethylene (most common) Abrasive, film forming, viscosity controlling, binder for powders
5 Poly (methyl methacrylate) Sorbent for delivery of active ingredients
6 Polypropylene Bulking agent, viscosity increasing agent
7 Polystyrene Film formation
8 Polytetrafluoroethylene (Teflon) Bulking agent, slip modifier, binding agent, skin conditioner
9 Polyurethane Film formation (e.g. facial masks, sunscreen, mascara)
Table 2. Microbeads: list of other possible plastics used in toiletries
Item Plastic Common uses
1 Poly(butylene terephthalate) Film formation, viscosity controlling
2 Poly(ethylene isoterephthalate) Bulking agent
3 Polyacrylate Viscosity controlling
4 Acrylates copolymer Binder, hair fixative, film formation, suspending agent
5 Allyl stearate/vinyl acetate copolymers Film formation, hair fixative
6 Ethylene/propylene/styrene copolymer Viscosity controlling
7 Ethylene/methylacrylate copolymer Film formation
8 Ethylene/acrylate copolymer Film formation in waterproof sunscreen, gellant (e.g. lipstick, stick products, hand creams)
8 Butylene/ethylene/styrene copolymer Viscosity controlling
10 Styrene acrylates copolymer Aesthetic, coloured microspheres (e.g. makeup)
11 Trimethylsiloxysilicate (silicone resin) Film formation (e.g. colour cosmetics, skin care, suncare)

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