Manual operation. No need for batteries and replacement parts.
Waterproof.
Perfect for various hairstyles from thick to thin, short or long, and no matter wet or dry
Can be used with our hair growth oil
With regular using, your hair and scalp will be healthier, stronger and cleaner than ever. 
The high-quality and gentle head massager scrubber can exfoliate and care for your scalp, relieve stress, ease itchiness, remove dandruff, dead skin cells, and psoriasis, makes your hair and scalp cleaner than before. Promote hair growth and blood circulation
The scalp exfoliator brush fits your palm perfectly and is easy to hold. You can control it comfortably in your hand, freely choose the massage intensity you want!