Colloidal Copper

Colloidal copper is toxic to a wide range of bacteria and fungi. Although it is used less commonly than colloidal silver, colloidal copper is gaining popularity as a treatment for several types of dermatological problems, including acne.

Copper-based compounds are the active ingredient in many anti-fungal, topical solutions. Copper has also been incorporated into fabrics and bandages to slow the growth of disease and odor-causing bacteria. Copper peptides, which are small molecules that are composed of short chains of amino acids connected to copper ions, are also the subject of research efforts for dermatological applications. They are being used in a number of rejuvenating and skin revitalizing treatments.

Colloidal copper and copper salts (copper sulfate) are frequently used in many branches of Naturopathic Medicine. However, the efficacy of copper therapies for the treatment of acne remains largely untested by rigorous clinical trials. More research is needed to determine whether the use of colloidal copper (and other colloidal metals, such as Silver) can significantly improve symptoms for individuals with acne.


Green synthesis of copper nanoparticles by Citrus medica Linn.(Idilimbu) juice and its antimicrobial activity. Shende, et al. 2015.
Principles of colloid therapeutics. Smith. 1922.
Effect of nanosized colloidal copper on cotton fabric. Chattopadhyay, et al. 2010.
Strain specificity in antimicrobial activity of silver and copper nanoparticles. Ruparelia, et al. 2008.
Susceptibility constants of Escherichia coli and Bacillus subtilis to silver and copper nanoparticles. Yoon, et al. 2007.
Synthesis and antimicrobial activity of copper nanoparticles. Ramyadevi, et al. 2012.
Synthesis and anti-bacterial activity of Cu, Ag and Cu-Ag alloy nanoparticles: a green approach. Valodkar, et al. 2011.
Nanocarriers and nanoparticles for skin care and dermatological treatments. Gupta, et al. 2013.
Are commercially available nanoparticles safe when applied to the skin? Robertson, et al. 2010.