This isn't because 1:1 is mechanistically optimal in some provable way it's because researchers studying combinations of these compounds chose 1:1 as the default and the literature accumulated around that choice
Niacinamide (Vitamin B3): A high-purity skin-perfecting agent that refines skin texture and strengthens the thin moisture barrier, effectively improving light reflection for a refreshed effect
So are many drugs used in endocrinology, reproductive medicine, and oncology including leuprolide (prostate cancer), oxytocin (labor induction), and vasopressin analogues (diabetes insipidus)
Trong khi , dng th hai l tin cht vitamin A- cc carotenoids c nhiu trong thc phm thc vt nh tri cy, rau v du
Briefly, each primary antibody was incubated for 12 h in a humidified chamber at 37 C, followed by detection using the HRP-conjugated secondary antibody and TSA-dendron-fluorophores (Histova, NEON 7-color IHC Kit for cryosection, 1:100), after which the primary and secondary antibodies were thoroughly eluted in stripping solution (Histova, Abcracker) for 60 min at 37 C
10.1038/s41401-021-00650-3 475 WangH.LiuX.YangH.JingX.WangW.LiuX.et al (2023e)