Non-toxic Enzyme Lice Shampoo Safe and Effective All-Natural, Biodegradable, Hypoallergenic, pH Balanced Made in the USA GRAS (Generally Recognized As Safe) Lice R Gone removes both lice and nits. It is pesticide free, pH balanced, hypoallergenic, and biodegradable. Effective, Fast results! Safe, All Natural ingredients are biodegradable, hypoallergenic and pH balanced. There are approximately 16 uses per 8 oz. bottle.