Institut Esthederm Hydra System Aqua Diffusion Fluid is a global moisturiser that helps restart the natural moisturisation process, helps the skin to find its water balance and preserves it from cutaneous ageing. Institut Esthederm has invented intelligent moisturzing with Hydra System, a new generation of moisturizing skincare that controls the balance between the static water and dynamic water to ensure optimal moisture levels and keep your skin young. Long-lasting, ideal moisturisation, giving the skin a feeling of intense comfort and well-being. The fine lines of dehydration are smoother. The skin is plumper, supple, velvety and soft to the touch. It radiates beauty and remains youthful.