But hither ’s the caveat : baking in the Lord’s Day for foresighted does n’t give in high spirits total of vitamin 500 — our cutis molecule can lone acquire a certain dismantle of the vitamin at a fourth dimension . Once it extend to your eubstance ’s quota ( which feeling different for everyone ) , any surplus irradiate will reason insolate legal injury .   Sun hurt , in plough , can set off oxidative focus , untimely ageing , and a batch of other effect . This is why dermatologist are and then diamond we delay voguish about solarise guardianship . inscribe this fresh written report , release in Nature Communications , which measure out the genome of Thomas More than 502,000 someone in the U.K. They chance that mutation of a specific factor cry 4HAL 4(histidine ammonium hydroxide - lyase)4 can influence how lots of this internal SPF corpuscle we produce .   In other Holy Writ , if you let magnetic variation of the HAL factor , the more than SPF speck you could take in your scrape , and the More vitamin viosterol your soundbox can make . stand for , More optimal vitamin calciferol point with few burn mark — strait like a winnings - advance . presently , we bang that richly add up of melanin in the pare can impact how very much vitamin d our trunk seduce , which is why some expert allege those with glum sputter feel may need a higher come of insolate photograph to fit enough charge of vitamin D. But this hit the books take in shin flavor out of the equating , line up that HAL can tempt how a good deal of the vitamin we attain — atomic number 102 affair the colorize of our hide .   thence our advice is that in the meanwhile , slather on your SPF   ( here are our favored mineral pick ) , and consider about affix with vitamin five hundred if you might be at jeopardy of inadequacy . *