I have used No Pong for close to 8 months now. In the beginning it took a while for my body to adjust to it, sometimes I’d need to reapply during the day. I’m a heavy sweater so I liked the bi carb original one as it went on and dried me out too leaving me feeling fresh. Recently within the past month for some reason I’ve been getting really bad rashes under my arms from putting it on. I emailed No Pong customer service and although I had already ordered 2 new ones before I discovered the rash, they amazingly sent me out 2 of the bi-carb free ones to try. Works SO much better for now, no rash! Super happy because I really love this deodorant. Really great customer service too - thanks team! :)