HAIR CARE PRODUCTS (NON-COLORING)

While most chemicals in cosmetics present minimal or no threat, several are associated with serious medical issues, such as developmental delays and cancer. Cosmetic chemicals enter the body through inhalation, the skin, and ingestion, and cause similar problems as food chemicals, per this site.

Contaminants and chemicals linked to cancer are found in food, water, and many other everyday goods. Still, no area of consumer goods is susceptible to less government direction than cosmetics, including Keratin Leave-In Conditioner. While most of the chemicals and contaminants in cosmetics almost certainly present very little risk, being exposed to some has been linked to serious health conditions, including cancer.