... layers, fabric layer, gel layer, non-stick layer. As for the gel layer, it contains hydrophilic macromolecule, ... , mint, ice sheet , water.2. The patch contains natural levo menthol, which reinforces the analgesic feeling ... headache or nmigraine pain strike.3. The patch contains a high percentage of water which works ... or over the temples.5. Use each Cool Patch for as long as needed but use only once ...