There actually is. So long as you're following the proper care instructions, their losing some of their breathability is likely due to a build-up of residue from the detergent you're using. Try using a laundry detergent that is specially formulated for activewear. These detergents do a great job of removing built-up residue and not leaving any additional things behind. This should help your socks regain their breathability and start performing like new again.