Sodium Chloride

Yes, it's salt.

What it does

Thickens shampoos and shower gels so they feel rich instead of runny.

This is plain salt, the same as table salt. It's most common in rinse-off cleansers.

Often found in: Shower gels, Shampoos, Soaps

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

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