I was messin' around with Striper flies the other day. Epoxied the head, stuck on the eyes and coated with Hard Head just like I always do. Went to the river to give em a test run and the head on one of them turns totally white (I can't see the eyes on the fly) after being in the water for a couple of minutes. After drying (warming?) it went back to normal.

Anybody know what causes this? Never had this issue before and would like to avoid it in the future.

Thanks,

Joe