How long should keep sunscreen?

Answer 1

The FDA requires sunscreens to maintain optimal effectiveness for 3 years (unopened), or until the stamped expiration date, whichever is sooner. Some products are affected more by heat, so should be properly stored.

Some products indicate a longer shelf life on their labels (Banana Boat lists a shelf life of 6 years).

Answer 2

That all depends on the brand of sunscreen. Different brands will be meant to last for varying amounts of time. Things like sweat or water will also affect how long sunscreen is effective fore.

Answer 3

That depends on the spf.

If the sunscreen is spf 30

It should protect you for about half an hour.

Answer 4

Two hours,,,,,A sunscreen's sun protection factor (SPF) is only fully effective for two hours after you put it on. Experts recommend carrying a bottle of SPF 30 to SPF 50 sunscreen around with you, even on cloudy or rainy summer days, so you can throw some on if the sun comes out.,,The best Sunscreen i would recommend is Santeva Brightening Sunscreen SPF 50+ ,,,,I always use it during summer time, it works perfectly for me. I probably say I use it everyday skincare routine. My skin looks better after putting on the product. I love using this product and I will always be.