It's been two and a half years since I've stopped using "regular" deodorant/antiperspirant. It took about a month for my body to get the funk out. Since then, I've used Tom's and Schmidt's natural deodorants. Last month, I started using Saje's deodorant duo. It doesn't irritate my skin and actually works! Best of all, the crystal stick lasts a long time so I'm saving money while being good to my body.