Preventing skin aging by Seaweed Skin Care. Premature skin aging is caused by free radical activity from ultraviolett light, particularly those parts of the body exposed to solar radiation. When skin is exposed to UV light, there is a decrease in the skin´s natural antioxidant defense system which includes glutathione, vitamin E and ubiquinone (CoQ10). This reduction in the skin´s natural defense system is an indication that the skin´s antioxidant balance can be overwhelmed by indoor UV light exposure. Free radical generation in the skin can be prevented or at least retarded by the topical application of antioxidants Seaweed Skin Care. The principal functions of the skin include protection, excretion, heat regulation, and regulation of immunological functions. These functions are affected by the structural changes in the skin that occur with aging. After middle age, the skin´s ability to perform its functions is reduced by as much as 45-55%. The change associated with these reductions include impairment of the barrier function, decreased turnover of epidermal cells, reduced skin cell formation and a reduced vascular network.