Feature: 1. Low energy red light passes through the scalp, directly affecting the hair follicles and deeply nourishing the hair roots. 2. Improve the regeneration ability of collagen fiber, promote cell photochemistry, promote hair generation and growth. 3. Promotes scalp blood circulation and nutrient absorption, then promotes cell regeneration. 4. Enhance the immune function of red and white cells and promote the healthy growth of hair. 5. With 160 irradiation points, the irradiation area is large and covers a wide range of scalp area. 6. Smart time management, 20 minutes is the best physiotherapy time, simple operation with one key, automatically shut down with sound prompt. Specification: Item Type: Hair Growth Helmet Material: ABS Product Voltage: 100-240V Laser Chips: 160pcs Single Light Chip Diameter: <1cm / 0.39in Use Time: 20min Size: Approx. 25.8 x 20.2 x 12.8cm / 10.16 x 7.95 x 5.04in Laser Wavelength: 650nm Light Emission: 15° Single Laser Power: < 1MW . Package List: 1 x Hair Growth Helmet1 x Instruction1 x Adapter Note: 1. The machine is simple to operate with one key, use for 20 minutes each time, and it will automatically turn off after 20 minutes.2. It is recommended to use in indoor environment at 25℃ for good effect. It is used 3‑4 times a week on average, and can be used once a day in severe cases.Special Note: Do not use this product directly irradiate to the eyes! Especially children!