All I can say is that I have been using No Pong for several years now - at first using it only at home or for short periods out and about until I realised that it does do exactly what is promised. I now exclusively use No Pong and it absolutely works 100%. I was worried when I went back to work in the city in a corporate environment that it wouldn't work, but has never let me down. I have also noticed that on days when I am simply doing chores at home and don't wear deodorant at all that I still do not usually have any odour so it definitely changes your body chemistry for the better over time. Basically I LOVE IT and recommend to everyone I know. I use the Vegan no fragrance because I have also had many issues with fragrance in products in the past so this is a life changer for me! Thank you NO PONG.