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INCI: COPPER SULFATE
An inorganic copper salt used in cosmetics as an astringent, skin conditioning agent, and sometimes as a colorant. It can help to tone the skin and support enzymatic functions.
Beneficial for
May aggravate
Safety summary
Generally considered safe for cosmetic use in low concentrations. High concentrations can be irritating.
CAS Number
7758-98-7
1% line marker
This ingredient is commonly used as a marker to identify where ingredients drop below 1% concentration on the label.
For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.