Cyclopentasiloxane
Also known as: d5, decamethylcyclopentasiloxane, cyclopentamethicone
Curly Girl Method Status
Cyclopentasiloxane is a non-water-soluble silicone. The Curly Girl Method classifies it as Warning because it coats the hair shaft and cannot be fully removed with sulfate-free cleansers, leading to product buildup over time. If you follow the CG Method strictly, avoid products containing Cyclopentasiloxane. Look for water-soluble silicone alternatives instead.
Products Containing Cyclopentasiloxane (1011)

Conditioning Trio Kit
Dove Beauty Intensive Repair Bi-Phase Serum + Oil - Damage Therapy - 3.9 fl oz
Dove Beauty UV Repair & Glow Gloss Defense Bi-Phase Serum + Oil - Damage Therapy - 3.9 fl oz

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&honey Creamy EX Damage Repair Hair Oil 100ml

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&honey Deep Moist Hair Oil 100ml

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&honey EX Deep Moist Hair Oil 100ml
Related Ingredients in Non-water-soluble Silicones
Frequently Asked Questions about Cyclopentasiloxane
Is Cyclopentasiloxane curly girl approved?
No. Cyclopentasiloxane is classified as Warning in the Curly Girl Method. It's a Non-water-soluble Silicones and is generally avoided by those following the CG Method.
What is Cyclopentasiloxane used for in hair products?
Cyclopentasiloxane belongs to the Non-water-soluble Silicones category in the Silicones group. It's commonly used in hair products for smoothing, adding shine, and reducing frizz.
What products contain Cyclopentasiloxane?
Our database contains 1011 products that list Cyclopentasiloxane in their ingredients. Browse the products section above to see their full CG analysis.
What are curly girl approved alternatives to Cyclopentasiloxane?
Look for products that use CG-approved ingredients from the same Silicones group. Check our ingredient database for approved alternatives in related categories.