What is the correct way to apply sunscreen?

Apply sunscreen as the final step of your morning skincare routine, after moisturizer but before makeup. Use about a teaspoon (2–3 mg/cm2) for the face and neck — most people underapply, which dramatically reduces actual SPF protection. Reapply every two hours when outdoors or after swimming and sweating. For daily office use with limited sun exposure, morning application is usually sufficient, but reapplication is key for outdoor activities.