Recently, macroalgae has found extensive utilization within the domain of biotechnology. Based on their variety of bioactive components, species of class Phaeophyceae are involved in the food, cosmetic, and pharmaceutical industries. Studies have proved that these unique compounds show beneficial activities for human health. With peculiar properties, including antioxidant, antimicrobial, antiviral activities, and related functionalities, each compound holds potential value for human health. This review discusses the bioactive compounds of brown algae and the recent multiple applications of those components that make up algae’s potential in industrial companies. The review was conducted by searching and selecting references related to the content of interest with popular web search engines such as Google Scholar and PubMed