Biotherm Aquasource Deep Serum (All Skin Types) has the following features: Contains 3-times the concentrations of Life Plankton™ and ultra-moisturizing Mannose, forms a synergetic effect in maintaining skin’s moisture and boosts skin’s affinity of the next skincare products. Iridescent liquid serum with shimmering micro-pearls, diffuses light to enhance the skin’s brightness and luminosity from within.