BRUSH ON BLOCK® SPF 30 Mineral Powder Sunscreen is an innovative sun protection product that offers the perfect on-the-go sun protection for all your outdoor activities. Housed in a self-dispensing brush, Brush On Block® is sweat and water-resistant, and offers broad spectrum protection from both UVA and UVB rays. It uses the naturally-occurring sunscreen actives titanium dioxide and zinc oxide, the only sunscreen actives recognized by the FDA as “safe and effective.”