NOPE
It sounds like SPF 50 is way stronger than SPF 30 but the truth is that SPF 30 sunscreens filter about 96.7% of UV radiation while SPF 50 sunscreens filter 98% of UV radiation. [17] Your sunscreen should be a minimum of SPF 30, and remember to reapply it every two hours, after swimming, sweating, or towel drying.