Because the peptide occurs naturally in human plasma (at roughly 200 ng/mL in young adults, declining to approximately 80 ng/mL by age 60), topical supplementation essentially restores youthful local concentrations in treated skin
Song, M., Liu, G., Liu, Y., Cheng, Z., Lin, H., Liu, J., et al., Eur
PMID 21030672
No human dose-finding trial exists
DATS reduces LPS-induced iNOS expression, NO production, oxidative stress, and NF-B activation in RAW 264.7 macrophages
Simply put, a good snooze can help increase the efficacy of your skincare regimen, leading to greater results and bringing new meaning to the idea of beauty sleep. So, does the amount you sleep affect your skin