I purchased my Certain Dri at Walmart for $6.49. It is a white plastic 1.2 fluid oz container with a screw off lid. The product is clear and is applied with a roll-on applicator. This product contains aluminum chloride 12% and is used to treat excessive pespiration and reduct underarm wetness. Per the container it stops excessive perspiration for 72 hours. It is doctor recommended and prescripton strength but is available over the counter.
I have used this product on my 14 year daughter for a couple of years now. Around the age of 11 she begin to sweat excessively and none of the other brand of anti-perspirants worked for her. This product when applied correctly works great for her. She must apply it at bed time which is a problem for her to remember sometimes but if she does she is free of sweat and wetness for the entire day. The bottle is small and is much more expensive than other brands but very little is needed on a nightly basis and it is so worth it. I didn't think we would ever find something that would work for her and this product does.