1. broad-spectrum protection:
To protect against both UVA and UVB rays. UVB rays are the main cause of sunburn, but UVA rays contribute to skin cancerand premature aging.
2. sun protection factor (SPF) of at least 30:
Higher SPF numbers mean more protection. For example, SPF 15 sunscreens filter out about 93% of UVB rays, SPF 30 filters out about 97%, SPF 50 blocks about 98%, and SPF 100 about 99%.
3. Water resistant:
No sunscreens are waterproof. Product’s front must specify whether it lasts for 40 minutes or 80 minutes while swimming or sweating. For best results, reapply sunscreen at least every 2 hours and even more often if you are swimming or sweating. Sunscreen usually rubs off when you towel yourself dry, so you will need to put more on.
Looking for sunscreen? Check out some of our skin care products here: