Magicap Reusable Hair Color Highlighting Tipping Cap made from silicone rubber and shaped for a comfortable fit. (one size fits all). Supplied with a free steel hook, the Magicap is a long-lasting and reusable highlighting cap with an ultra-snug fit and a protective brim. It self-seals around the root area, has no bleed-back and your client’s hairline is clearly visible. can use the Magicap for all highlight and low-light techniques and it’s much easier to use than foils for highlighting very short hair.