Health Canada is regularly reviewing these ingredients to make sure they are safe.Health Canada prohibits or limits the use of ingredients that present health risks.However, when used at small doses in products applied to the skin, the exposure to consumers is very low and therefore there is no health risk.This is why Health Canada considers formaldehyde in aerosol containers to be unsafe, but small amounts of formaldehyde in certain types of cosmetics to be safe, as outlined in the Cosmetic Ingredient Hotlist.In cosmetics, these ingredients are found mainly in shampoos, deodorants, body lotions and make-up, usually at a concentration of 0.1% or less. Cosmetic Ingredient Review Expert Panel (with the support of the U. Food and Drug Administration) reviewed BHT in cosmetic products and found that BHT is safe as currently used in cosmetics.BHA was evaluated under the Government of Canada’s Chemicals Management Plan and was found to not present a risk at current levels of exposure. Coal tar dyes are colour ingredients that were originally made from chemicals extracted from coal tar, and the distillation process was not 100% effective so harmful impurities were often left in the product.
DEA and DIPA, along with any ingredients that can cause the formation of nitrosamines, when included in a cosmetic, may cause injury to the user, and should not be present in cosmetics sold in Canada.
The following represents their current status in cosmetics in Canada.
BHA (butylated hydroxyanisole) and BHT (butylated hydroxytoluene) are used as preservatives in many foods, cosmetic products and drugs.
Also, coal tar dyes used in permanent and semi-permanent hair dyes must have cautionary statements on the inner and outer labels to warn consumers that the ingredients may cause skin irritation in certain individuals, and that a patch test should be done before every use. If any of these ingredients are found to be unsafe for human health and are relevant to cosmetic uses, Health Canada will add them to the Cosmetic Ingredient Hotlist.
For example, as a result of a CMP assessment, is proposed to be added to the Cosmetic Ingredient Hotlist as a substance that is not permitted in cosmetics intended to be used on or around mucosal membranes such as eyes, nose or mouth.