Is Cyclopentasiloxane Banned? EU vs US Status, Risks & Where It Hides
TL;DR: Cyclopentasiloxane is restricted in the EU but allowed in the US (endocrine disruptors).
INCI name Cyclopentasiloxane. CAS 541-02-6.
Is Cyclopentasiloxane banned in the EU?
| EU status | Restricted |
|---|---|
| US status | Allowed |
| Risk level | medium |
| Where it shows up | hair serum, primer, deodorant, conditioner |
| CAS number | 541-02-6 |
What is Cyclopentasiloxane?
Cyclopentasiloxane is a volatile silicone (D5) used for smooth, silky texture.
Why is Cyclopentasiloxane used in personal-care products?
It is used for its preservative, coloring, UV-filtering, lightening or texture-enhancing properties.
Is Cyclopentasiloxane dangerous? Documented risks
Persistent and bioaccumulative; the EU restricts D5 in wash-off products over environmental and endocrine concerns. The US has no restriction.
Products that may contain Cyclopentasiloxane
- Pantene Smooth & Sleek ConditionerPantene
- Dove Intense Repair ConditionerDove
- Secret Shower Fresh Invisible Solid AntiperspirantSecret
- Secret Clinical Strength Invisible SolidSecret
- Old Spice High Endurance Pure Sport AntiperspirantOld Spice
- Axe Dark Temptation Antiperspirant Deodorant StickAxe
- Degree Original Protection Antiperspirant DeodorantDegree
- Mitchum Men Advanced Control AntiperspirantMitchum
How to avoid Cyclopentasiloxane: safer alternatives
Choose EU-compliant or 'free-from' formulations and read the INCI list. BannedPantry flags this ingredient and suggests safer swaps.
Frequently asked questions about Cyclopentasiloxane
Is Cyclopentasiloxane banned in the EU?
Cyclopentasiloxane is restricted under the EU Cosmetics Regulation (1223/2009), but it is allowed in US personal-care products.
Is Cyclopentasiloxane in US cosmetics?
Yes — Cyclopentasiloxane can still appear in US-sold cosmetics and personal-care products because US rules are far less restrictive than the EU's.
What products contain Cyclopentasiloxane?
Read the INCI ingredient list on the back of the package. Scan the barcode with BannedPantry to flag Cyclopentasiloxane automatically.
Are there safer alternatives to Cyclopentasiloxane?
Yes. Look for EU-compliant or 'free-from' formulations; BannedPantry suggests safer swaps when it detects Cyclopentasiloxane.
Scan any product's barcode and instantly see if it contains Cyclopentasiloxane or other ingredients banned overseas.
Scan a product free →Related endocrine disruptors
Avoiding banned beauty ingredients? Check your food, too.
Sources
- EU endocrine disruptor list I — EU ED Lists
- EU Cosmetics Regulation Annex II (prohibited substances) — EU Cosmetics Regulation 1223/2009
- EU-banned cosmetics ingredients and US impact — RegASK
Our scores are never influenced by brands. Last updated 6/11/2026.