Copper Citrate
INCI: COPPER CITRATE
Reviewed by Daisy · Last updated 14 Aug 2026
A copper compound with purifying properties, explored for skin clarity
Best For Skin Types
Oily, Acne-prone, Combination
Addresses
Usage Frequency
Daily
What Is Copper Citrate?
Copper citrate is a chelated form of copper—a trace mineral that plays a role in various biological processes. In skincare, it functions primarily as an antimicrobial agent, helping to reduce the growth of bacteria and microorganisms on the skin's surface.
Copper has a long history in skincare formulations, though modern use tends to be more targeted and evidence-based than historical applications. When incorporated into products, copper citrate is designed to support skin cleanliness and help address conditions where microbial activity may be a contributing factor.
How It Works
Copper citrate works through its antimicrobial properties, which stem from copper's ability to interfere with bacterial cell function and proliferation. This can help reduce the population of acne-causing bacteria and other microorganisms that may compromise skin clarity.
Additionally, preliminary research into copper compounds suggests potential involvement in melanin regulation, though the mechanism and efficacy in topical skincare products is not yet fully established. More research is needed to understand the extent of this effect in cosmetic formulations.
Clinical Evidence & References
Copper has been studied for antimicrobial efficacy in various contexts, and this property translates to skincare use. However, most evidence for copper citrate specifically in cosmetic formulations is limited, and clinical trials dedicated to this ingredient in skincare are not abundant.
Some research into copper compounds suggests a potential role in regulating melanogenesis (melanin production), which could make it relevant for hyperpigmentation concerns. However, this evidence comes from broader studies on depigmenting agents and copper compounds in general, rather than from targeted clinical trials on copper citrate in skincare products. More research is needed to establish efficacy and optimal concentrations for cosmetic use.
How to Use
Copper citrate is typically used as a supporting ingredient within a broader skincare formulation rather than as a standalone treatment. It is generally incorporated into cleansers, serums, or targeted treatments for acne-prone or congested skin. Use as directed by the product instructions, and monitor your skin's response over several weeks. If combining with other active ingredients, allow time between applications to avoid over-treating the skin.
Safety & Precautions
Frequently Asked Questions
From the Clinic
Not sure what your skin actually needs?
Two minutes, a few questions, and we’ll point you at what matters — no guesswork.
Take the skin quizRelated Ingredients
Clotrimazole
An purifying agent used to address fungal-related scalp and skin concerns
Colloidal Gold
Gold nanoparticles with potential antioxidant and skin-conditioning properties
Colloidal Silver
An purifying ingredient with a long history in wound care and medical settings
Coptis Japonica Extract
A traditional plant extract with purifying properties and preliminary barrier-support potential
Cutibacterium Acnes Bacteriophages
Bacteriophages that target acne-causing bacteria without disrupting skin microbiome balance
Dehydroacetic Acid
Synthetic preservative
Learn More About Skincare Ingredients
Explore our comprehensive ingredient glossary to understand what's in your products.
Browse All IngredientsShop Our Products
Find professional skincare solutions at Skintique.