Amount and coverage
Apply before going outdoors and cover the face, ears, neck and exposed hands. A very thin layer or missed edges reduces real-world protection.
Reapplication
Reapply every two hours during exposure and after sweating, washing or wiping the face. Long driving or working close to windows can add exposure that should be considered.
Tinted sunscreen and visible light
For melasma and dark spots, tinted sunscreen containing iron oxides may add protection from visible light, provided it is also broad-spectrum with suitable SPF.


