How to useShake well and apply liberally to face, neck, and body, 15 minutes before sun exposure. Reapply every 2 hours, or after 80 minutes of swimming, sweating, or sport activity, and immediately after toweling dry.To get the full broad-spectrum protection, apply one ounce of sunscreen (a shot glass full) to your entire body. Not using the correct amount will lower the level of sunscreen protection significantly. Key ingredientsWetForce Technology: Negative ions in the formula combine with positive ions in perspiration and water to create an additional layer of invisible sun protection. As you continue to sweat and get wet, the product becomes more effective without any white cast.HeatForce Technology: A heat-sensing essence in the lotion becomes activated by external heat, forming a stronger barrier.VIEW FULL INGREDIENTS LIST