Oleth-20

OH-leth TWEN-tee

Emulsifier, Solvent 7/10 Safety Not CGControversial Synthetic Vegan

What Is Oleth-20?

A PEG-based emulsifier derived from oleyl alcohol. It helps create stable emulsions and acts as a solubilizer for oils and fragrances in water-based hair formulations.

Source: Oleyl alcohol with ethylene oxide

Origin: Synthetic

Also known as: PEG-20 Oleyl Ether

What Does Oleth-20 Do to Your Hair?

Emulsifies oils and other lipophilic ingredients into water-based hair products. Also acts as a solubilizer for essential oils and fragrances. Helps maintain product stability and uniformity.

Best For

All hair types (functional ingredient)

Not Recommended For

Sensitive scalp (PEG sensitivity)

Concentration Matters

0.5-3% in 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

Standard PEG-related safety considerations. Potential 1,4-dioxane contamination managed through manufacturing purification. Generally safe at cosmetic concentrations.

FDA Status: Generally Recognized As Safe

FDA permits use in cosmetics. Standard PEG purification guidelines apply.

EWG Score: 3/10

HairAide Verdict

A standard PEG emulsifier with no unique concerns beyond those common to all PEG compounds. Functional and safe from reputable manufacturers.

Products That Contain Oleth-20

Conditioners, leave-in treatments, styling products, fragranced hair products

Alternatives to Oleth-20

If you want to avoid Oleth-20, look for products with these ingredients instead:

Polysorbate 80, Ceteareth-20, Laureth-23

Frequently Asked Questions

Is Oleth-20 safe for hair?

Yes, Oleth-20 has a safety rating of 7/10 and is generally considered safe for use in hair products. Standard PEG-related safety considerations. Potential 1,4-dioxane contamination managed through manufacturing purification. Generally safe at cosmetic concentrations.

Is Oleth-20 bad for curly hair?

Oleth-20 is not CG-method approved. Curly hair types may want to avoid this ingredient or use products containing it sparingly.

Is Oleth-20 CG-method approved?

No, Oleth-20 is not approved for the Curly Girl method.

What can I use instead of Oleth-20?

Some alternatives to Oleth-20 include: Polysorbate 80, Ceteareth-20, Laureth-23

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