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Copper
AKA “Copper powder, cuprum, Bronze powder, Copper bronze, Copper, elemental, Tatum-T, Arwood copper”
Synthetic
Ingredient Facts
Copper
AKA: Copper powder, Cuprum, Bronze powder, Copper bronze, Elemental, Tatum-T, Arwood copper
Synthetic · Antioxidant · EWG: 4
Synthetic
Antioxidant
Preservative
Anti-Aging
Skin Conditioner
Synthetic
Clean
Copper helps skin retain moisture and supports natural radiance by boosting the body's natural collagen production processes.
Solubility Insoluble (NIOSH, 2024)
Formula
Cu
Mol. Weight
63.55
CAS #
131044-77-4
Form
Liquid
State
Reddish lustrous malleable odorless metallic solid.
See origin →
Functions
Antioxidant
Fights free radicals — the unstable molecules from UV, pollution, and stress that break down collagen and cause premature aging.
Anti-Aging
Targets fine lines, wrinkles, or loss of firmness. Works by boosting collagen, speeding cell turnover, or both.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Antimicrobial
Keeps your product from growing bacteria, mold, or yeast. Without these, that jar of cream becomes a petri dish in about a week.
Draws water to skin
Traditional Use
This CAS number corresponds to Copper, a metal used in traditional medicine across multiple cultures for its antimicrobial and wound-healing properties. Historically incorporated into cosmetics and skincare for its purported benefits in collagen production and skin firmness.
Skin Types
●all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
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 Status
USA✔ permitted
EU✔ permitted
JAPAN✔ permitted
CANADA✔ permitted
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
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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 Feb 2026
Data: PubChem · CosIng · EWG · CIR