I bought this to put on new leather boots before the holidays in a snowy city.  It seemed to do a good job.  I haven't worn them in the rain, but walked through snow in them and it didn't damage them.  I didn't notice a color change at all.  I used it again after my trip to clean them up and it took care of scuff marks and made the boots look new again, so I will definitely be applying this from time to time.  I did the whole hair dryer bit the first time, but like other reviews, am not so sure it's needed.  I didn't use the hair dryer the second time and got the same results.  Works pretty well and it doesn't smell!