l carnitine liquid now L-Carnitine, Triple Strength Now Foods L-Carnitine Liquid 3000

The two most common are GLOW (typically GHK-Cu, BPC-157 and TB-500) and KLOW (the same three plus KPV)

Kannengiesser K, Maaser C, Heidemann J, Luegering A, Ross M, Brzoska T, Bhm M, Luger TA, Domschke W, Kucharzik T Melanocortin-Derived Tripeptide KPV Has Anti-Inflammatory Potential in Murine Models of Inflammatory Bowel Disease Inflammatory Bowel Diseases (2008) 5

For GHK-CU, fibroblast culture work, collagen and elastin expression assays and reconstructed-epidermis models are the assay formats the published work in this area tends to use, which matters when you are deciding whether the material as supplied is fit for the experiment you have in mind

B.MartinJ