In the Dietary Polyphenol Supplements segmentation by type, the market is classified into five chemical families that shape formulation strategies and pricing structures. Flavonoids dominate with the largest share, encompassing sub‑classes such as flavonols, flavones, and flavanols that are extensively researched for cardiovascular and cognitive benefits. Phenolic acids follow, including hydroxycinnamic and hydroxybenzoic acids, which are central to metabolic‑health products due to their impact on glucose metabolism. Stilbenes, notably resveratrol, occupy a niche but high‑value segment, primarily linked to anti‑aging and anti‑inflammatory claims. Lignans contribute a modest portion, leveraged in hormone‑balance supplements because of their phytoestrogenic activity. Tannins, characterized by strong antioxidant capacity, are increasingly incorporated into skin‑health formulations. Each type’s proportion of the total market reflects both the depth of scientific validation and the cost of raw material extraction, thereby influencing overall market valuation.