OSEA. Red Algae Mask. This Product Is:. a multi-tasking facial mask. Good for:. dry, mature, blemish-prone, combination and normal skin types. Why We Love It:. OSEA. Red Algae Mask is a stimulating, complexion-refining facial treatment that infuses depleted skin with natural antioxidants and enzymes help to improve the appearance of skin. This clarifying seaweed mask tingles on skin while cleansing, decongesting and minimizing the look of pores. Formulated with French red clay which draws out impurities and absorbs excess oil. The perfect problem-solver for blemished or congested skin..