Ingredient profile
CYCLOPENTA- SILOXANE
Raters disagreeemollienthair conditioningskin conditioningCAS 541-02-6
At least one of our safety lists speaks to this ingredient. Also written as Cyclopenta- siloxane, Cyclopenta-siloxane, Cyclopenta Siloxane…
Raters don't agree. Here's where each one stands
Safe
Greenlens Ingredient Scan
Independent
Greenlens Tolerance Screen
Independent
Caution
Greenlens Precautionary Screen
Independent
Concern
—
Where each list lands
Funding shown- Safe
Greenlens Ingredient Scan
Independent
No EU-regulated hazard recognized for this ingredient.
- Caution
Greenlens Precautionary Screen
Independent
A silicone flagged as very persistent and bioaccumulative (vPvB) in the environment. (ChemSec SIN List (Substitute It Now))
- Safe
Greenlens Tolerance Screen
Also screened — not on these lists
- Health Canada Ingredient Hotlist
- California Proposition 65
- US NTP Report on Carcinogens
- IARC Monographs
- ANSES Endocrine Disruptors
- EU Microplastics Restriction
- EU Harmonised Classification (CLP Annex VI)
Where regulators stand
Shown side by side, never combinedEach jurisdiction is reported on its own terms, from its own official lists. Where they disagree, that disagreement is the finding. Absence from a list is never a safety claim.
European Union
FlaggedCarries a formal hazard classification. Not itself a cosmetic use rule.
- ECHA (REACH) · ECHA Candidate List of Substances of Very High Concern (REACH)A very common volatile silicone in leave-on cosmetics, identified as very persistent and very bioaccumulative (vPvB).
Canada
No listing foundNot on the lists we hold for this jurisdiction. That is an absence of a listing, not a safety finding.
Checked: Health Canada Cosmetic Ingredient Hotlist.
California
No listing foundNot on the lists we hold for this jurisdiction. That is an absence of a listing, not a safety finding.
Notes
- Persistent / bioaccumulative
