PREMIUM MATERIAL: This crystal hair eraser is made of high-quality ABS and glass, which is sturdy and durable. The handle part of the eraser is made of sturdy ABS material, which has a unique feel and is sturdy and durable. Painless Hair Removal: Simply slide the magic eraser surface onto the skin and wipe in a circular motion to easily remove hair from touching surfaces using micro-technology. Whole Body: Crystal Hair Eraser is safe to use on knuckles, arms, legs, chest and back. However, we recommend not using too much or rubbing too much. If you have sensitive skin, try it on your arms/legs before using it on other sensitive areas. ECO-FRIENDLY AND REUSABLE: Crystal Depilatory uses nanocrystal technology, which when lightly rubbed against the skin, causes the hair to clump and fall off the surface. No need to refill or recharge and can be reused for up to 3 years. EASY TO USE: 1. Treat with warm water before use 2. Rub on skin 3. Use lotion after removal. Note: Do not apply too much force to the skin.