Abstract
Tall Oil Acid is a mixture of oleic, linoleic, and rosin acids derived from the hydrolysis of tall oil, a byproduct of wood pulp. Cosmetics formulated with Tall Oil Acid include hair dyes and bleaches, shampoos, skin cleansing preparations, and a shaving cream. Tall Oil Acid is approved for use as an indirect food additive. When fed to rats as 15% of the total caloric intake, Tall Oil Acid was nontoxic; however, it had a growth-retarding effect. No treatment-related effects were observed in rats fed diets containing 5% and 10% Tall Oil Acid over two generations. Liquid soap formulations containing up to 12% Tall Oil Acid did not cause dermal irritation, sensitization, or photosensitization in human subjects. On the basis of data included in the report on Tall Oil Acid, and the available data on Oleic Acid, it is concluded that Tall Oil Acid is safe for use in cosmetic products.
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