Yikes! I just tried Certain Dri tonight. I bought it at Target today since I saw it mentioned here. I had never heard of it before. Anyway, I don't sweat extremely badly but usually my pits are wet by nighttime. I followed the directions (haven't shaved today, and made sure my pits were clean and dry before applying, and only applied 2 short strokes of the roll-on). Then, after about 1 minute of letting the roll-on dry, I began to feel a stinging-itching-burning sensation. I decided to give it a minute to go away, but then I went to a mirror and looked at my pits and they were all red except right in the middle. They started to itch really bad so I got the Dove soap and scrubbed them with a wash cloth. I scrubbed and scrubbed because they were itching so bad. Then I dried them and the itch seems to be gone. I am going to hold off on putting on my regular deodorant tonight.
For my regular deodorant, I recently started using Arrid Extra Dry and it is performing well. The powder scents of Dove and Ban are my runners up. I am allergic to Secret and the old cheap brand called Hi & Dri (I don't even know if it is on the market anymore).