Cyclohexasiloxane

SY-klo-HEX-uh-sil-OX-ane

Conditioning Agent, Solvent 7/10 Safety Not CGControversial Synthetic Vegan

What Is Cyclohexasiloxane?

A volatile cyclic silicone very similar to cyclopentasiloxane but slightly heavier. It evaporates from hair after application, leaving minimal residue.

Source: Synthetic silicone compound

Origin: Synthetic

Also known as: D6

What Does Cyclohexasiloxane Do to Your Hair?

Acts as a spreading agent and carrier for other conditioning ingredients. Provides temporary smoothing and shine before evaporating. Slightly slower evaporation rate than cyclopentasiloxane.

Best For

All hair types, frizzy hair, fine hair

Not Recommended For

None specifically

Concentration Matters

0.5-5% in hair products

Hair Type Compatibility

1A Straight Fine
1B Straight Medium
1C Straight Coarse
2A Wavy Fine
2B Wavy Medium
2C Wavy Coarse
3A Curly Loose
3B Curly Tight
3C Curly Corkscrew
4A Coily S-Shaped
4B Coily Z-Shaped
4C Coily Tight

Method Compatibility

Curly Girl (CG) Method: Avoid
CG Avoid

Safety & Regulation

7/10
AvoidCautionSafe

Similar safety profile to cyclopentasiloxane. EU has restricted use in wash-off products at concentrations above 0.1% due to environmental bioaccumulation concerns, not human toxicity.

FDA Status: Generally Recognized As Safe

FDA permits cosmetic use. EU environmental restrictions apply to wash-off products.

EWG Score: 4/10

HairAide Verdict

Very similar to D5 (cyclopentasiloxane) in function and safety profile. A lightweight volatile silicone that evaporates without residue. Same environmental caveats apply.

Products That Contain Cyclohexasiloxane

Serums, heat protectants, conditioners, styling products

Alternatives to Cyclohexasiloxane

If you want to avoid Cyclohexasiloxane, look for products with these ingredients instead:

Cyclopentasiloxane, Isododecane, Caprylyl Methicone

Frequently Asked Questions

Is Cyclohexasiloxane safe for hair?

Yes, Cyclohexasiloxane has a safety rating of 7/10 and is generally considered safe for use in hair products. Similar safety profile to cyclopentasiloxane. EU has restricted use in wash-off products at concentrations above 0.1% due to environmental bioaccumulation concerns, not human toxicity.

Is Cyclohexasiloxane bad for curly hair?

Cyclohexasiloxane is not CG-method approved. Curly hair types may want to avoid this ingredient or use products containing it sparingly.

Is Cyclohexasiloxane CG-method approved?

No, Cyclohexasiloxane is not approved for the Curly Girl method.

What can I use instead of Cyclohexasiloxane?

Some alternatives to Cyclohexasiloxane include: Cyclopentasiloxane, Isododecane, Caprylyl Methicone

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