How much and how often should I apply The Mineral Sunscreen SPF 50?

Apply a generous amount—about 2-3 pumps–to your face 15 minutes before sun exposure. No sunscreen lasts all day. We therefore recommend reapplying at least every 2 hours for continuous protection. The Mineral Sunscreen SPF 50 is not water-resistant so reapply immediately after swimming, sweating, or towel drying.