Nutritional Biologics for Skin and Hair.

Skin and hair quality directly impact facial plastic surgery outcomes, influencing wound healing, scar quality, pigmentation, inflammation, and perioperative telogen effluvium. This review summarizes the nutritional biologics-dietary nutrients and bioactive compounds with mechanistic and clinical relevance to aesthetic practice. Vitamins A and C support keratinocyte differentiation and collagen hydroxylation; vitamin D and zinc contribute to barrier immunity, antimicrobial peptides, and tissue repair. A structured nutritional assessment and targeted correction of deficiencies, paired with a low-glycemic, antioxidant-rich dietary pattern, offers a practical, low-risk strategy to optimize perioperative recovery and long-term maintenance after facial aesthetic and reconstructive procedures.