Bio-Oil Dry Skin Gel 200ml Bio-Oil Dry Skin Moisturizing Gel 100ml is a new way to treat dry skin as it is made from an oil that leads to a feeling of warmth when used. Bio-Oil Dry Skin Gel is tested according to a pre-planned test plan. A specialized skin care product designed to moisturize the skin, it contains an oil-in-water emulsion and gel-like preparation consisting of natural and synthetic oils, emollient esters, vitamins, essential oils, antioxidants, fragrance and colour. In a trial of dry skin sufferers, the vast majority said it was better than anything they had previously used to treat dry skin.