The SunsiStick KA SPF 50+ can be applied locally to the forehead, nose, cheekbones, and backs of the hands. This sunscreen stick offers very high daily sun protection for sensitive, at-risk skin and skin prone to actinic keratosis. Its formula features a transparent finish that is very easy to apply, even on the most delicate areas. The core of the SunsiStick KA SPF 50+ is a unique active ingredient complex developed by Pierre Fabre Research, consisting of a stable and effective filter system for very broad UVB-UVA protection over time, a duo of complementary antioxidants: Thialdine for immediate cell protection and Tocopherol for overall cell protection against oxidative stress, as well as Vederine, an active ingredient that increases the release of vitamin D receptors and strengthens the skin barrier. Its very high skin compatibility has been proven and assessed under dermatological control. Long-lasting effect. A study on the effect over 8 hours after a single application was conducted with 20 participants.