How to use this deep conditioning heat cap After shampoo and conditioner, cover with a shower cap or not use, then use the hair care heating cap, using no more than 30 mins per times, your hair will be soft after washing and using hair dryer blow-dry. Specification: Input voltage230V Frequency50Hz Power55W Package Weight0.92lb (418g) Cap Circumference23-28 (600-700mm) Adjustable Cap Depth 5 (125mm) Totofac Hair Steamer Cap Before Use: Damged Hair Damaged hair develops cracks in the outside cuticle. Once the cuticle lifts, your hair is at risk for further damage and breakage. It may also look dull or frizzy and be difficult to manage.