Both SPF 30 and SPF 50 offer significant sun protection, but there are some differences to consider when choosing between the two.
SPF, or sun protection factor, is a measure of a sunscreen's ability to protect your skin from the sun's ultraviolet (UV) rays. An SPF 30 sunscreen blocks approximately 97% of the sun's UVB rays, while an SPF 50 sunscreen blocks around 98%. This means that there is only a marginal difference in terms of the percentage of UVB rays blocked between SPF 30 and SPF 50.