regarding testers,all our products are tested within a small group a long while before it was offered to a further few testers,i chose the three testers because of there work methods and after speaking to them all on the phone made my decisions,there were many who proclaimed to already test for so and so which is not what i wanted(testers by there virtue tend not to give a totally honest review-you don't bite the hand that feeds you)these testers were given half a bottle to try for a while and just say honestly what they felt about it