This scalp massager’s bristles are made of soft silicone to protect your scalp. The rest is crafted from wheat straw, a by-product of wheat production, which is a zero-waste material, so no harm is done to your body. It has 44 comb teeth which only require a small amount of shampoo to create a richer foam. Longer silicone bristles (0.67 inch) can easily penetrate hair to reach the scalp roots. Compared with washing by hand, this scalp exfoliator brush can better massage your scalp in the shower, ease itchiness, reduce oil and dandruff effectively. This hair brush can be used for deeper cleansing in the shower, but can be used on dry hair as well as a massaging tool. Size: 3.54 x 3.1 x 3.54 inches and weighs only 2.8 oz. The hand-through ergonomic handle with non-skid grip fits in your palm perfectly! Easy to hold onto for comfortable control, whether left or right handed.