Hey guys done a lot of reading on here and very new to concentrates and never made any so had a couple questions. Can't find 99% iso is 91% okay or will that not work/ make noticeably different outcome? Also does it matter which method of evaporating alcohol I use between using a fan/ using warm dark place for a few days/ using hot bath? Last one( don't know much about concentrate) is this healthy to smoke(or vape) or any worse then vaping bud? is sounds a bit sketchy to me.