How to use hoyesch crystal hair eraser? After Clean and treated skin by warm water. You gently draw crystal hair eraser in circles on your skin. Moisturize immediately afterwards. Does this crystal hair eraser cause redness and pain in the skin? I had been struggling with ingrown hairs for over two years before I stumbled upon this hair eraser. But to my surprise, it does work. And the effect is immediate. My skin looks great, no pain, no erythema, no strawberry skin, no ingrown hairs. Can this crystal hair eraser be used on the face? We do not recommend using crystal hair eraser on the face as the skin in these areas is thin and delicate. After using this crystal hair eraser, how should I store it? After each use, rinse with running water and brush away any debris: hair, dead skin, etc. Store in a dry place. Where can i use it? Will this crystal hair eraser really take off my leg hair? This crystal hair eraser is very effective in removing leg and arm hair!