Don't know about the brand (Kleen Strip) for sure but I remember using some spray on air craft paint stripper on some aluminum rims a few years ago.
I sprayed it on, let it sit, the paint raised up and bubbled real nice. I grabbed the water hose/nozzle to spray off the loose stuff and it was coming off real nice. Then I thought a bug bit me on the leg so I smacked at my leg. Then another bug bite and another bite and then my legs were stinging all over and it hit me that the water was splashing that stripper off the rims and it was eating my legs up, in spite of the water.
I turned the water from the rim to my legs and started rubbing the stripper off with one hand while spraying with the other till I got all the stinging/burning stopped. Then I put on long pants and finished cleaning up the rim with a scraper before letting it dry for the second coat of spray stripper.
Wear monogoggles (if it burned my leg it would eat up your eyes), good rubber gloves (you know most strippers just eat up the flimsy little latex gloves you wear for painting/staining or doing oil changes) and what ever other clothes you need to keep it off your arms/legs.