Dermalogica's Solar Defense Booster SPF50 adds broad spectrum SPF protection to any of your favourite Dermalogica Moisturisers: Active Moist, Skin Smoothing Cream & Intensive Moisture Balance. Solar Defense Booster is a light weight lotion that can also be applied alone. Protecting the skin against UVA & UVB rays is crucial to the longevity of a healthy skin. Boosters intensify attention to where skin needs it daily, helping to customize your Dermalogica Moisturiser for powerful results.