This treatment promotes the oxygenation of the skin using a modern corrective method: the Bul’Mask®. Unique to Nelly De Vuyst, the Bul’Mask oxygenating foam mask delivers a very high dose of oxygen directly to the skin to facilitate epidermal exchanges and permeability. It increases penetration of Nelly De Vuyst corrective actives therefore maximizing their effects and benefits. Discover amazing results with the Bul’Mask Oxygenating Treatment!