I dont actually recommend using a sunscreen...rather,use hat,shades or hoodies to cover yourself up. Sunscreen has to be prescribed by a doctor ,since your skin sensitivity differs from others. There are numbers on it 30,60,90...implies the sensitivity. If you use different you will face some serious issues...I have seen some people really reacting badly to it...i saw this girl once who had half her face turn to an orange peel because of it... But if u r gone do it...don't buy the highly concentrated one at least... Not a derma here,you gotta do what you got to do. Sincerely ThatDude