State board written exam theory review for shampoo, condition, scalp treatment procedures, safety precautions, shampoo chemistry, conditioner types: cream, leave-in conditioners, conditioning packs, shampoo molecule composition: lipophilic and hydrophilic (oil-loving, water-loving), hair brush types; natural bristles, nylon bristles, and their uses, written procedures for hair brushing, shampooing and conditioning, and safety precautions; for cosmetologist and barbers, beauty school students to pass the shampoo part of the state board written exam and get cosmetology and barber license. Video by BeautyHealthTravel Channel.

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