Clear Choice hair follicle shampoo is designed to help the user pass a hair follicle drug test. The shampoo's package states that this product offers a 200 percent guarantee that the user will pass a hair follicle drug test or will receive double his money back.
According to Health Tech, the exclusive distributor of Clear Choice hair follicle shampoo, a standard hair follicle drug screen covers a 90-day period. For the test, a hair sample must be cut from as close to the scalp as possible. If one has very short hair, a body hair sample may be substituted. Typically, a hair follicle test is used to screen for marijuana use.