Shark oil (listed as hai rasv) is included in this formula for its emollient properties, which are valued in rich cosmetic preparations for conditioning the skin's surface. Emollients work by forming a light film to help prevent moisture loss, which can reduce the immediate feeling of roughness and leave skin feeling softer and smoother to the touch. In practical use, this means the mask's first step will likely have a creamy, substantive texture. After rinsing, you can expect a conditioned feel rather than a completely rinsed-clean sensation, as some of the nourishing oils remain. The second-step hyaluronic cream then layers over this to further help hold moisture in. This combination is typical of treatments aimed at dry or less supple skin needing both nourishment and hydration. As with any product containing multiple active and animal-derived ingredients, it's sensible to patch test first if your skin is reactive.