> Harder than what? If I told you sunscreen works and you called it anecdotal evidence and claimed sunscreen might do something but no more than thickened water (whatever that may be) it would be very easy to test correct? Rub sunscreen on half your body and the water solution on the other half and lay out in the sun. Well aloe is no different, lay out in the sun a little to long and get a burn, then rub aloe on one side of your body and water on the other half.
No, the thickened water comment was in reference to aloe, not sunscreen. As for what "thickened water" is, it's what it sounds like: water that has been thickened. Aloe gel is thickened water. Lotions are basically thickened water (often with some oil added).
There's no scientific debate about whether sunscreen prevents or reduces sunburn. It clearly does and it's not hard to find many studies demonstrating this. Wikipedia has several citations and you can find more without looking very far. e.g. There are piles of citations here: https://www.aad.org/media/stats/prevention-and-care/sunscree...
The question about sunblock is whether it actually prevents skin cancer, which is a much harder thing to test or prove. From what I can tell, the general consensus is still that sunblock use reduces the incidence of certain cancers.
No, the thickened water comment was in reference to aloe, not sunscreen. As for what "thickened water" is, it's what it sounds like: water that has been thickened. Aloe gel is thickened water. Lotions are basically thickened water (often with some oil added).
There's no scientific debate about whether sunscreen prevents or reduces sunburn. It clearly does and it's not hard to find many studies demonstrating this. Wikipedia has several citations and you can find more without looking very far. e.g. There are piles of citations here: https://www.aad.org/media/stats/prevention-and-care/sunscree...
The question about sunblock is whether it actually prevents skin cancer, which is a much harder thing to test or prove. From what I can tell, the general consensus is still that sunblock use reduces the incidence of certain cancers.