Each year we arrive on island as "fish belly white" and are nicely tan when headed home after three or four weeks in May-June time frame. We live on the Texas Gulf Coast, 70 miles from the Gulf beaches. Upon arrival, I buy Vichy sun products there on SXM from the pharmacies in Cole Bay or Simpson Bay. Have never found these in the states. I can't say enough praises for these. I use a 30, my husband a 50. We do not burn but still get a very nice tan.