The best way to keep those Wave Patterns or other extension patterns during bedtime is simple. Just follow this steps and you won't have to worry about curing in the morning, tangles or bed head.
1. Detangle hair with a wide tooth comb or paddle brush
2. Put anywhere from 2 or more braids in your hair (your desire)
3. Place a bonnet or satin scarf on head to hold hair in place
If these steps are followed properly, your extension will last for a longer time frame. Also, this will allow you to shake and go in the mornings. Your extension will keep the shine, bounce and wave that you desire.