How we scored it
Where it comes from
Made by polymerising isobutylene, obtained from petroleum or natural-gas cracking, then hydrogenating the polymer. No renewable manufacturing route exists.
In plain English
A thick, silicone-like oil that gives products a smooth glide and glossy finish. It is built entirely from petroleum-derived building blocks.
CosIng definition: Propene, 2-methyl-, homopolymer
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References
- 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
- 2HYDROGENATED POLYISOBUTENE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3HYDROGENATED POLYISOBUTENE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=HYDROGENATED%20POLYISOBUTENE