Its compartmentalized double formula enables Duolys HYAL to simultaneously combat all signs of ageing, with emphasis on firmness and moisturisation. The 5% pure vitamin C, combined with vitamin E and hyaluronic acid, blocks the action of free radicals, reinforces collagen production, moisturises and revives complexion's radiance. To preserve its stability, the vitamin C is isolated in a protective compartment. Each active substance delivers the full power of its anti-ageing action on the face, neck and décolleté, while remaining gentle on the more fragile skins.