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Is Methylene Glycol vegetarian?

Methylene Glycol

Vegetarian Vegetarian
Vegan Vegan

Methylene Glycol, also known as methanediol or formaldehyde hydrate, is the hydrated form of formaldehyde with the formula CH2(OH)2, commonly present in aqueous formaldehyde solutions and used in cosmetics, notably in some hair straightening products.

Also known as Formaldehyde hydrate
INCI name Methylene Glycol
CAS number 463-57-0
EC number 207-339-5
CosIng ID 86678
Last reviewed 4 July 2026

An ingredient is considered vegetarian if it avoids components derived from killing an animal.

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