Dual 2 in 1 Shampoo + Conditioner

Sodium benzoate is a chemical preservative. When combined with vitamin C (ascorbic acid), it can form benzene — a known carcinogen. It is also linked to hyperactivity in children, leading the UK to recommend removing it from children's foods.

"Parfum" is the EU/INCI designation for fragrance — the same concerns apply as with "Fragrance." It covers hundreds of possible chemicals that don't need to be individually listed.

DMDM hydantoin releases formaldehyde — a known human carcinogen — as it breaks down. Formaldehyde-releasing preservatives are a leading cause of allergic contact dermatitis. They are banned in baby products in some countries.