Safe and harmless: suitable for beginners and intermediate scholars. They are very safe and painless. The beard microneedle roller can promote blood circulation in the face and head, Stimulating hair follicles during sleep can also promote the growth of men's beards. At the same time, it is best to use beard oil. You can also use the roller alone for skin care. Helps eliminate wrinkles, improve skin brightness, and prevent sun damage. Generally speaking, people with sensitive stratum corneum can roll their skin with the weight of a needle. Made of safe and environmentally friendly materials. Suitable for beginners to use at home, safe and harmless. Can effectively enhance skin brightness. It is the best holiday gift for lovers, friends and fathers. Specifications: Instructions: 1. Clean the care area (cleanser) 2. Microneedle cleaning (use 75% alcohol or saline, ultraviolet light). 3. It is best to clean the area to be treated with saline. 4. Gently roll the area to be treated with a microneedle. 5. Each part adopts "M" type rolling operation. It runs for 5 minutes. It is best to apply beard oil while piping. 6. Do not touch the operating part within 5 hours after use to prevent infection. 7. Microneedle care 1-2 times a week, 10 times as a course of treatment, it is recommended to use more than 2 courses in a row. If you feel unwell, stop using it immediately. Keep this product out of reach of children. Avoid storing light at room temperature. Package Included: 1*hair growth liquid, 1*microneedle roller Notes: Due to manual measurement, there may be an error of 1-2 cm, please understand. The color difference may vary depending on the monitor settings. We provide you with the best products and services. If you have any questions, please let us know and we will solve the problem as soon as possible. thank you very much.