Murad Environmental Shield Essential C Day Moisture SPF 30 Keep moisturised and protect your skin’s defence barrier with Murad Environmental Shield Essential C Day Moisture SPF 30. Rich with antioxidants that shield from the sun and restores environmentally stressed skin. Featuring a patented Skin Repair System which increases radiance, firmness and elasticity, leaving your skin feeling healthier and looking wonderful. Full of Vitamin C and SPF for full sun coverage and refreshing skin cells.