A crystal hair eraser is a hand-held pad with a very fine glass surface. You rub it in small circles on dry skin, and it buffs off fine hair, a bit like a gentle exfoliation. It does not remove hair at the root, so hair grows back as it does after shaving.
Crystal (nano-glass) hair eraser
One reusable pad for arms and legs. It works best on fine hair. Results differ from person to person.
Look for
A smooth, even glass surface with no chips or sharp edges.
A case or cover to keep the surface clean.
A pad that you can rinse with water and dry.
Clear instructions that say which body areas it is for.
Skip it if your skin is sensitive, broken, sunburnt or irritated. Use it only on healthy skin.