Walnut Peptide Powder segmentation by application reveals four principal demand clusters. Nutraceuticals dominate with an estimated 45 % of total revenue, driven by clinical evidence linking walnut peptides to cardiovascular health and anti‑inflammatory effects; manufacturers embed the powder in capsules, tablets, and ready‑to‑drink supplements, commanding premium pricing. Functional Foods account for roughly 30 % of the market, where the ingredient is incorporated into protein bars, dairy alternatives, and fortified beverages to enhance protein quality and antioxidant capacity, supporting higher unit volumes but lower margins. Cosmetics represent about 15 % of sales; peptide‑rich extracts are valued for skin‑firming and anti‑aging claims, leading to niche formulations in serums and creams. Animal Feed contributes the remaining 10 %, primarily as a growth‑promoting additive in aquaculture and livestock diets, where cost sensitivity is paramount. Collectively, these application segments shape the overall Walnut Peptide Powder market size, with each segment’s growth trajectory reflecting regulatory, consumer, and price dynamics.