Ingredient guide ›

Guar Hydroxypropyltrimonium Chloride

The frizz tamer.

What it does

Made from guar beans. It coats hair so it's easier to comb and less frizzy, and helps thicken shampoo.

Good to know

Comes from guar gum, a thickener also used in food.

Often found in: Shampoos, Anti-dandruff shampoos, Shower gels

Around the world

• United States: No FDA limit. The FDA doesn't approve cosmetic ingredients before sale. Source
• EU and UK: No special limit in the EU or UK. Source
• Canada: Not on Health Canada's Hotlist of restricted ingredients. Source
• Australia: No limit in Australia's Poisons Standard. Source

Sources

No independent safety review found. The only review is industry-funded.

• CIR: Safety Assessment of Galactomannans as Used in Cosmetics (2015) (Industry-funded)