research Hair Straightening: Techniques, Chemicals, and Evolution March 2010 in “Cosmetic Dermatology” Hair straightening methods have advanced to improve effectiveness and reduce damage, but still rely on heat and chemicals.
research The Retarded Hair Growth Mutation in Mice Is an Allele of Ornithine Aminotransferase 9 citations, January 2014 in “Molecular Genetics and Metabolism Reports” The rhg mutation in mice affects the Oat gene, causing hair growth issues and other symptoms.