Need to read and understand the directions. The suit should not be put on the heat cycle untill it's air dry. Inside-outside it doesn't matter. After it's dryI put mine in for the longest high/heattime and remove it after 30-45 mins. while it's still going and put it with scent free hands in a ziplok bag. I put each piece in it's own bag, hot. Letting it cool down in the dryer will only start the suit sucking up the dryer scents.

I wouldn't just use one straight from the store without washing it. It's supposedly good for 20 washings. Even twice a year is 10 years worth.