All frown line treatments require a special ingredient to stabilize botulinum toxin A, the protein responsible for helping smooth moderate to severe frown lines. For instance, BOTOX Cosmetic uses human serum albumin (HSA), a blood product, as its stabilizer. Dysport, another frown line treatment, uses cow’s milk protein in addition to HSA. DAXXIFY is unique because it is the only formulation that uses a novel peptide as a stabilizer and does not contain human or animal byproducts.