Nobiletin is widely used in the nutraceutical industry for its neuroprotective, anti-inflammatory, and metabolic-regulating properties. It is a popular ingredient in cognitive health supplements (targeting circadian rhythm and memory) and weight management formulas. In the cosmetic sector, it is utilized for skin brightening and anti-aging due to its antioxidant capacity. Buyers should select the grade based on whether the end-use is an encapsulated supplement, a functional beverage, or a topical cream.