I purchased the double volume extensions in August 2017 of this year. I will have to say that I am VERY disappointed. When you first get the extensions they feel so smooth and they are very straight.
After only 4 or 5 times of wearing them, the ends of the hair become very very rough and it looks tangled. Yes, I washed them just like I read how to do. To me, it is a waste of money.
Bottom Line: No, I would not recommend this to a friend