Beauty ingredient · Silicone
Cyclohexasiloxane (D6)
- CAS
- 540-97-6
A volatile cyclic silicone.
- Cyclic silicone (D4/D5/D6)
- Silicone
- Expert review pending
Concern level
Strong evidence of harm at high intake, emerging evidence of harm, or a common allergen or irritant. The concern level sets how many points Cyclohexasiloxane (D6) costs on a product’s receipt.
What the evidence says
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Very persistent in the environmentRegulatory
Restricted in the EU (0.1%) in wash-off cosmetics since 2020 and in other cosmetics from 6 June 2027 because they persist and build up in the environment. [1][2]
Evidence tiers say how sure the evidence is, separately from how much it matters. About evidence tiers.
Rules around the world
| Where | Status | Details | Date | Source |
|---|---|---|---|---|
| European Union | Restricted | Below 0.1% in cosmetics after 6 June 2027. | — | [2] |
“Banned” means explicitly prohibited or withdrawn after review; “not permitted” means never authorized there. We use each regulator’s own words.
Popular products that list Cyclohexasiloxane (D6)
1 of the 17,000 most-scanned products in the US with a GoodSwap page list Cyclohexasiloxane (D6).
Names GoodSwap recognizes on labels (4)
- d6
- cyclohexasiloxane
- cyclohexasiloxane d6
- dodecamethylcyclohexasiloxane
Sources
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“Shall not be placed on the market in wash-off cosmetic products in a concentration equal to or greater than 0,1 % by weight of either substance, after 31 January 2020.”
eur-lex.europa.eu
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“for all cosmetic products other than the ones mentioned in paragraph 3(a), paragraph 1 shall apply after 6 June 2027”
eur-lex.europa.eu