Copper Powder (CI 77400)
AKA “Copper powder, cuprum, Bronze powder, Copper bronze, Copper, elemental”
Ingredient
Ingredient Facts
Copper powder (CI 77400)
AKA: Cuprum, Bronze powder, Copper bronze, Elemental
Ingredient · Absorbent · EWG: 4
Synthetic
Not Clean
Copper Powder (CI 77400) is a cosmetic ingredient.
Formula
Cu
Mol. Weight
63.55
CAS #
7440-50-8
Form
Powder
State
Solid
See origin →
Functions
Absorbent
Adds Color
Antioxidant Protection
Reduces Inflammation
Brightens Skin
Traditional Use
Copper has been used in traditional medicine and cosmetics for centuries for its antimicrobial and purported skin-firming properties. Incorporated into cosmetic colorants and treatments in historical practice based on beliefs about its regenerative effects on skin.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
EWG
4
CIR
Safe w/Qualifications
Pregnancy
Caution
CIR Safety Findings
all-shades-safe
Concentration Guide
1%
0%1%
Reg. Limit
EU regulatory limit: 1%. Source: EU Cosmetics Regulation (EC) 1223/2009, Annex III (Restricted Substances), Entry 24
Regulatory Agencies
Green synthesis of silver and copper nanoparticles and their composites using Ocimum sanctum leaf extract displayed enhanced antibacterial, antioxidan
Ashokkumar M, Palanisamy K, Ganesh Kumar A, Muthusamy C, Senthil Kumar KJ
Artificial cells, nanomedicine, and biotechnology, 2024
Final Report: Safety Assessment of Copper Gluconate as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Bis(Tripeptide-1) Copper Acetate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Copper Citrate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Copper Tripeptide-1
European Commission
EU Cosmetic Ingredient Database (CosIng)
Silver Copper Zeolite
European Commission
EU Cosmetic Ingredient Database (CosIng)
Copper Gluconate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Copper Tripeptide-1
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Bromine, elemental
Health Canada
Health Canada Cosmetic Ingredient Hotlist
Hypersensitivity reaction in an infant fed hydrolyzed lactalbumin contained in a semielemental formula.
Heyman MB, Stoker TW, Rudolph CD, Frick OL
Journal of pediatric gastroenterology and nutrition, 1990
The effect of copper tripeptide and tretinoin on growth factor production in a serum-free fibroblast model.
McCormack MC, Nowak KC, Koch RJ
Archives of facial plastic surgery, 2001
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR