Features: - Contains a 6ml serum chamber in the center of the brush to help evenly and easily apply essential oil while massaging the scalp. - Tooth-tip massage design helps relax head muscles and effectively removes debris, dirt, and excess oil from the scalp. Simply move across different areas of the scalp while the bristles perform the cleaning. Provides a gentle pinching and releasing sensation for a pleasant experience. Especially soothing on the back of the scalp and neck area. - Waterproof design allows for easy rinsing and cleaning. Offers excellent waterproof performance, ensuring hygiene, safety, and comfort with every use. - Equipped with red light therapy that penetrates the dermis to support increased collagen and elastin production. Regular use may improve skin elasticity and texture. - Portable and convenient for travel. Makes a great gift for family and friends on occasions such as birthdays or holidays. Note: - Actual color may vary slightly due to lighting effects. - Allow 13 cm variation due to manual measurement. Specifications: - Size: 21 x 8.5 x 5.7 cm - Rated voltage: 3.7V - Rated power: 5W - Battery capacity: 1400mAh - Charging interface: Type-C - Package includes: Electronic red light hair massager, USB charging cable, storage bag, user manual, color box