If your lace is turning white underneath it's mainly because the ashesive did not dry correctly hence water/sweat/steam caused the adhesive to turn white underneath the lace. To combat this, you need to layer your adhesive the correct way, cure for 24-48 hours and no water, steam & sweat during this time. Apply your glue in a timely manner because doing it too late will result in you applying lace on dry glue and it will turn white and lift.
No sleeping with a melt band either because it causes sweat build up