Past 28 days you have no published standard to point to, only a guess
For most people, 36 months is the sweet spot
Nicotinamide Adenine Dinucleotide ( NAD ) is a crucial coenzyme in every body cell
- B sung cng ngh Niacinamide c tc dng lm trng c B An ton Thc phm v Dc phm ph duyt, n cng ci thin m v h tr gii quyt cc vn lo ha nh thm nm, tn nhan,
Tong KI, Padmanabhan B, Kobayashi A, Shang C, Hirotsu Y, Yokoyama S, et al
Age spots and sun damage typically require longer treatment periodsaround 3-4 monthsbut the results are often more dramatic and longer-lasting than those achieved with topical treatments alone