Blue Lizard Australian Sunscreens are recommended by doctors. All Blue Lizard products have broad photostable UVA/UVB protection, protecting from UV radiation between 280 and 400 nanometers. Blue Lizard products also have at least 6 percent Z-Cote Zinc Oxide, which allows for optimal dispersion over the skin for an even barrier against UV rays. Blue Lizard products are all at least SPF 30+, which gives your skin more than 30 times its natural protection against UVB rays. What’s more, Blue Lizard’s Water Resistant and Sport formulas can withstand 240 minutes in whirlpool water. Blue Lizard products are chemical-free, paraben-free, fragrance-free, oil-free and propylene-glycol-free. Plus, Blue Lizard comes in packaging with Smart Bottle technology in which the bottles and lids change color around dangerous UV rays to remind everyone to cover up.