Suitable for washing / conditioning, curling / straightening, bleaching / dyeing, cutting, braiding and hair-styling Can be used by hairdressers, hair stylists, Total Length: 30 inches (from the forehead to the back hair end) cosmetologist, barber shops, hair salons and the cosmetology school students Note: For first usage, please comb from the hair bottom to above. It is common to lose a little hair for the first time. To reduce hair loss, please don't pull the hair hard while coming it.