Tennessee Barber Practice Exam

Shampoo is primarily used to cleanse the hair and scalp of dirt, excess oil, and product buildup. Option A, making hair easier to comb, could be a secondary benefit of using shampoo as it can help to remove tangles and knots. However, it is not the main purpose of shampoo. Option C, treating alopecia areata, is incorrect as this is a medical condition that requires specific treatment and cannot be solely addressed by using shampoo. Option D, softening the scalp, is also incorrect as shampoo is not typically formulated to soften the scalp, but rather to cleanse it.