The current International Agency for Research on Cancer (IARC) evaluation is that Carbon black is possibly carcinogenic to humans. Short-term exposure to high concentrations of carbon black, may produce upper respiratory tract discomfort. Toxicity Assessment "Results from reactive oxygen species (ROS) assay indicated that carbon black waste extract induced oxidative stress by increasing intracellular ROS generation in these three human cell lines. Moreover, induction of oxidative damage in these cells was also observed through the alteration of glutathione (GSH) and superoxide dismutase (SOD) activities.” - NCBI
CAS No: 1333-86-4. SCA endorses products with the Allergy Certified logo, that do not contain Carbon Black. Carbon Black; and "Synonym(s): CHANNEL BLACK; PIGMENT BLACK 6; PIGMENT BLACK 7; ACETYLENE BLACK; AROFLOW; AROGEN; AROTONE; AROVEL; ARROW; ATLANTIC; BLACK PEARLS " - EWG
HOW IS IT USED?
Carbon Black functions as a colourant; "composed of finely divided particles of elemental carbon obtained by the incomplete combustion of hydrocarbons (channel or impingement process)." - EWG
RESEARCH - WHAT THE EXPERTS SAY
WHAT IS CARBON BLACK?
NICNAS has No restrictions on importing or use of this colourant that is banned in the US;
"Violation of government restrictions - Restricted in cosmetics; use, concentration, or manufacturing restrictions - Color additive not approved by FDA for cosmetics used around eyes (only for products for use around the eyes)" And, "Violation of government restrictions - Banned or found unsafe for use in cosmetics." CTFA International Cosmetic Ingredient Dictionary and Handbook. And, "Possible human carcinogen California EPA Proposition 65" - EWG
Toxicity Assessment "Results from reactive oxygen species (ROS) assay indicated that carbon black waste extract induced oxidative stress by increasing intracellular ROS generation in these three human cell lines. Moreover, induction of oxidative damage in these cells was also observed through the alteration of glutathione (GSH) and superoxide dismutase (SOD) activities. Last but not least, by treating the cells with V-spiked solution of concentration equivalent to that found in the carbon black waste extract, V was identified as the main culprit for the high toxicity of carbon black waste extract. These findings could potentially provide insight into the hazards of carbon black waste extract and its toxicity mechanism on human cell lines." - NCBI
RESOURCES & RECOMMENDED ARTICLES:
Carbon Black: Dangers in cosmetics explained by Maple Holistics
Nano Industry calls for another look at carbon black by CosmeticsDesign-europe.com - "The Nanotechnology Industries Association (NIA) has called on its members to comment on the recent SCCS opinion on carbon black in nanoform for use as a colourant in cosmetics."