Hydroxytyrosol is widely recognized for its powerful antioxidant properties, making it valuable in dietary supplements and functional foods aimed at promoting heart health and reducing oxidative stress. It is commonly used in nutraceuticals to support cardiovascular function due to its ability to lower LDL cholesterol oxidation. Its anti-inflammatory and neuroprotective effects are being studied for potential use in brain health supplements and age-related cognitive decline. In cosmetics, hydroxytyrosol is added to skincare products for its ability to protect the skin from free radical damage and environmental aging factors. It also shows antimicrobial activity, which makes it useful in natural preservatives for food and personal care products. Due to its stability and bioavailability, it is increasingly incorporated into fortified beverages, oils, and health-focused food formulations.