WebNov 1, 2001 · Vitamin A and birth defects. Continuing caution is needed. N Engl J Med 1995;333:1414-1415. 19. Shaw GM, et al. High maternal vitamin A intake and risk of anomalies of structures with a cranial neural crest cell contribution. Lancet 1996;347:899-900. 20. Werler MM, et al. Maternal vitamin A supplementation in relation to selected birth … WebApr 14, 2024 · Summary. Niacinamide and retinol are popular skin care ingredients that can treat acne, hyperpigmentation, and signs of aging. While they have similar effects, retinol is more potent. However, it ...
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