The same great SolRx original formula but in a 32 oz pump bottle. SolRx high performance Original 50 spf is a water-based, fragrance free, paba-free, paraben-free, oil free and reef friendly sunscreen. SolRx sunscreens are waterproof and certified to last 8 hours. SolRx products spf ratings are measured after 8 hours, 6 of these hours are in the water. Many other cosmetic brand sunscreen spf ratings are measured after only 40 or 80 minutes. 32 oz pump bottle is an excellent for daily sunscreens users. 3 year shelf life.