1. Healthy Hair - Using our roller on your scalp stimulates collagen production in the skin, which increases the production of stem cells in the hair follicles to grow hair naturally. 2. SAFE - Our microneedle rollers are non - invasive and have a 0.50mm needle length, so even inexperienced users can use them. It is risk - free, effective, easy and painless. 3. Upgrade - Our skin rollers have 0.50mm microneedles that stimulate natural hair growth and help fight hair loss, receding hairline and patchy facial hair more effectively and naturally. 4. EASY TO USE - Our skin rollers are an alternative to expensive spa treatments. Gently rolling on the scalp makes them easier to use and more effective. Due to its size and structure, it is easy to clean and carry. 5. Color: Gold 6. Packing list: 1 pc.