Copper Sulfate
A copper mineral salt. It dries and helps calm irritated skin, common in products for reactive skin. Well tolerated at low levels.
Evidence by route
Topical application
A functional mineral salt. Safe at low levels.
- CIR Cosmetic Ingredient Review safety assessment
How to read tiers A–F
- BLimited evidence. One RCT or several controlled studies with limitations
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Normal, Dry, Combination, Oily, Sensitive
About this ingredient
Copper Sulfate is a mineral copper salt, a source of copper ions. INCI: Copper Sulfate. In a formula it works as a conditioning and astringent component, a source of the trace element copper, and it sometimes supports antimicrobial defense. Copper takes part in skin enzymes and in the synthesis of matrix components. The biological role of copper is known, but in cosmetics a meaningful skincare effect is more often linked to copper peptides than to the plain salt. So it is a supporting functional component rather than a potent active. It is used in small amounts. Pregnancy safety. At cosmetic concentrations topical use is systemically negligible, with no evidence of harm. It can be used during pregnancy and lactation. Tolerance. At working concentrations, irritation potential is low.
Frequently asked questions
Is Copper Sulfate safe during pregnancy?
Copper Sulfate is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Copper Sulfate for?
Copper Sulfate suits: normal, dry, combination, oily, sensitive.
What is Copper Sulfate and what does it do in cosmetics?
A copper mineral salt.
What's the INCI name for Copper Sulfate?
The INCI name is Copper Sulfate.
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