I did. I do it once a year at least. I also have Gore-tex sailing gear, I wash those too.
First time I thought, this is no good. But if you put your gear in a dryer or hang it in a really warm place after you applied the DWR spray it should work just fine.. If it doesnt, maybe you should return it? I dont know the active shell, I only have pro shell stuff so I dont know if that works different.
Here is a good tutorial:
'A wise man will make more opportunities than he finds'
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