I have now used up the second roll and have to say that I never had a problem with the fact that my strands have failed after washing. However, I have now decided for a break ... Despite solver, the tapes could be very difficult to resolve out of my hair and even now, after more than a week, I still have the adhesive residue in the hair. Not looks beautiful and feels like having a whole pack of gum in your hair!
Next time I would probably still prefer to access back on not so strong tape, although I then drops out one or the other strand - they are finally glued quickly.