Serious burns in Borneo

I have been using Riemann SP20 for well over ten years now.. Just before we came out to Malaysia for a big holiday I purchased some SP20 factor 30. Never again and I will be contacting Riemann directly when I get home. This is being written on the day that I was in the sun for less than three hours and have received serious burns on my back, not bad when it states it lasts for ten hours on the bottle, it has excess alcohols in it as its a spray now, alcohols means less protection to me. This has now ruined my holiday for a few days while I wait for the burns to go down a bit and look out some decent sun cream. The old cream was just SPF20 and I stayed in thirty eight degree heat and blasting sun all day watching world super bikes in Italy and didn't burn. Riemann please read these reviews, I don't know what you have done to your formula, but it's not worked. Go back to the old stuff, it used to be amazing. Too many negative comments on here only says one thing.