A salon specialty is a service that a salon offers to its customers. COIF, which is four letters, is a hairstyle or haircut. Perm, also four letters, is a chemical treatment that permanently changes the structure of the hair. Nails, five letters, is a manicure or pedicure service. TINT, four letters, is a hair coloring service. Permanentwave, thirteen letters, is a hairstyling technique that uses heat and chemicals to create waves or curls in the hair.