Kelp is a class of seaweed that is commonly used in various forms, such as supplements, powders, and capsules. It is a rich source of iodine, which is important for thyroid function and overall metabolism. Kelp is also high in other minerals such as iron, calcium, and magnesium. It can help improve skin, hair, and nail health and may aid in weight loss, promote healthy digestion, and boost the immune system. Additionally, Kelp is a good source of antioxidants that help to protect cells from damage generated by free radicals.