Wella color charm liquid cr me hair color dark smokey ash blonde 462 1.4oz/42ml Wella Color Charm Liquid Permanent Hair Color penetrates the cuticle layer of the hair lodging in the cortex.. Wella Color Charm Liquid Permanent Hair Color offers superior gray coverage.. The wella color charm liquid cr me hair color medium ash brown 237 1.4oz/42ml color will gradually fade but permanently changes the natural color of the hair.