Know Your Ingredients: Ammonium Hydroxide

What it is
Ammonium Hydroxide is a colorless, clear liquid. It is made by dissolving ammonia in water.

What it does
Ammonium Hydroxide is used to adjust the PH level of cosmetic products.
In addition, it can also be used in hair dyes to help the color better diffuse into the hair shaft.

Side effects
Ammonium Hydroxide can irritate eyes. In addition, in the European Union this ingredient can be used only in concentrations up to 6%.

(Sources: cosmeticsinfo.org and EU Cosmetic Directive website)

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