Updated version with 12 traditional bristles and 13 upgraded bristles, and 77 independent nodes for multi dimensional kneading of the scalp. This design enables a more precise head massage and relaxation, with more contact points than traditional models for deeper cleansing and reduced pressure on any single contact. It is especially suitable for sensitive or fragile scalps. Design features Manual operation (no battery required) and waterproof. Ergonomic handle provides a comfortable grip for both left and right handed use. Curved brush surface with bristles of different lengths to fit the scalp. Perforation design and attached string for easy storage and quick drying. Contains tourmaline. Wet and dry performance Scalp scrubber lathers shampoo well and distributes shampoo, conditioner, hair mask and oil evenly. Delivers a head massage experience while cleaning and helps remove flakes and other buildup from the scalp. Can be used as a head massager or scrubber to relax the head, relieve stress, and promote blood circulation and scalp metabolism. Application group Suitable for men, women, kids and pets. Works on any type of scalp and hair, whether straight or curly, thick or thin, short or long, oily or dry. Pets can also enjoy this brush for bathing or hair removal.