There's other reasons why
While youll often find "peptides" placed front and center on the actual product packaging, ingredient lists often categorize peptides by how many amino acids a peptide contains, such as dipeptide (two), tripeptide (three), and hexapeptide (six)

Pharmaceutical-grade GHK-Cu at therapeutic concentration Stimulates dermal papilla cells extends anagen growth phase Promotes follicle enlargement reverses miniaturization Stimulates scalp angiogenesis improves blood supply to follicles Potent anti-inflammatory reduces follicle-damaging scalp inflammation Hyaluronic acid for scalp hydration and barrier support Dual use: scalp (hair growth) and face (anti-aging repair) 100% organic, vegan & cruelty-free Made in USA The Best Hair Growth Stack with GHK-Cu GHK-Cu produces its best hair growth results when combined with complementary treatments that address the same follicle mechanisms through different pathways: GHK-Cu + GHK-Biotin Serum Biotin (vitamin B7) is the most well-known supplement for hair health it supports keratin synthesis, the structural protein hair is made from
This is the same mechanism that supports tissue repair, but it is a meaningful contraindication for anyone with active or recent malignancy
It is important to choose the right one for effective results
The Bottom Line The FDA 503A Bulks List is a regulatory pathway for traditional compounding from certain active pharmaceutical ingredients