● Manual operation. Waterproof, no battery required. Perfect for various hair styles from thick to thin, short or long, and no matter wet or dry, even to groom hair of animals ● Taking shower with this soft shampoo brush makes your hair and scalp cleaner. High quality and soft hair brush provides you a enjoyable washing experience ● Massages your scalp in the shower to ease itchiness and promote blood circulation. Getting a relaxing massage at home and every time you wash your hair ● Ergonomic design perfectly fits in your palm and is easy to hold. Only 1.8 Oz, lightweight and stores easily ● Excellent scalp massager is suitable for whom has long and manicured nails, you won't damage your manicure during washing hair anymore