My brother lives in a tropical, humid environment and plays lots of sports. Given his high metabolism and bigger build, he sweats A LOT, and he is very sensitive to his perspiration and body odour.
I saw this while in France and based on the advise of the pharmacist, got this for my bro.
He loves this. And he has tried everything from natural rock salts to chemically steeped products, anything to help get rid of 1) body odour and if possible 2) perspiration.
Packaging is kinda average. Same old, same old plastic container with roll on top. Easy, convenient and highly portable. Formulation works for my bro as it doesn't stain clothes, isn't sticky, eliminates odour, reduces perspiration, and can be washed off without scrubbing too hard (some products adhere to the skin making it impossible to wash off).
The only downside is I think they only sell this in France. They don't have it in my country so my brother uses this sparingly. So most of the time my brother is using Simple- Kind To Skin Soothing Anti-Perspirant. Not much of an anti-perspirant, but is the most deodorising and least irritable among everything else available in my country.
To see full descriptiong (French): please see here http://www.vichy.fr/soin-corps/stress-resist-traitement-anti-transpirant-72h-roll-on-deodorant/p2110.aspx