I used "sparkle" fabric in a quilt - ONCE.
The sparkle came off... and hid in the washing machine for several loads thereafter.
Hubby had sparkly boxers for awhile. I had sparkly bras for awhile. The towels sparkled for awhile.
Eventually, the sparkles were gone. They left the original fabric a lot faster than they completely left the washing machine.
I will never use that kind of fabric again!!