- The best defense against damage leading to wrinkles, fine lines, and other signs of ageing - Protects against free radicals, corrects existing damage, and encourages a more youthful, firm appearance - Suitable for normal to dry skin types and mature skinsPREVENT SkinCeuticals Double Defence (C E Ferulic Serum + FREE Ultra Facial Defence SPF 50+) This exclusive collection contains a full-size Skinceuticals C E Ferulic and full-size Skinceuticals Ultra Facial Defence SPF50+. The Skinceuticals Ultra Facial Defence SPF 50+ is free! Sunscreens alone only protect skin from 55% of the damage from the sun however, when combined with a topical antioxidant, the skin is offered up to an increased 96% protection. SkinCeuticals NEW Double Defence C E Ferulic Kit is comprised of two brand icons, C E Ferulic and Ultra Facial Defence SPF 50+. This kit is your double defence system for normal, dry, and ageing skin to help prevent free radical damage and protect against UVA and UVB rays. Clinic