Fixative/ˈfɪksətɪv/ Definition 1 of 3Pro Tip 1/3Usage in Cosmetics Often found in beauty products, it helps to maintain appearance. She carried a small bottle of fixative to touch up her hair. Pro Tip 2/3Practical Application People use fixatives practically, not for decoration; it secures items in place. Use fixative tape to hold those wires against the wall. Pro Tip 3/3Not Permanency Fixative isn't always permanent, it may allow some movement or adjustment. After arranging her bouquet, she sprayed a light fixative.