Some report hives to hair conditioners that may be used by Woman with long hair. These
hair products, termed
protein hydrolysates, are used to repair
hair. These products have ingredients such as collagen, keratin, elastin, milk, and wheat, almond or silk. Hair sprays that include methyldibromo glutaronitrile may cause hives. Hives due to permanent waving have been noted rarely. If one of these products causes hives then contact with the product should be avoided".