Review (5/5): works in minutes.
So far these have been working fabulously. I put them in my wet hair getting out of the shower and i left them there for about 20 min with my hair still being damped (i had to leave somewhere,so i had to take therm off) and my hair still ended up drying with some light curls in my hair even after getting them off while my hair was wet. Very impressed.
I don't have straight hair i have semi wavy hair so if your hair is naturally straight I would recommend putting them on when wet and leaving them in until your hair dries or leaving them over night.