Factors such as pollution, harsh weather, UV rays, smoking, stress, limited daily care, medication and diet can damage skin causing the epidermis (outer layer of the skin) to lose its balance and normal function. UniquEssentials skin care products for Environmentally Stressed Skin are high in Vitamin C, extracted from a variety of plant sources, peptides and rich nourishing oils which protect and restore skin. Brighten, tone and stimulate your skin back to a harmonized state.