Take a look at the ends of your hair. Split ends are easy to spot, instead of a single hair strand that's intact all the way to the end, a split end looks just like that: two separate strands of hair at the bottom of the hair shaft, sticking away from one another.
Maybe you’ve used your hair –dryer or straightener too much. Maybe the hair colour you recently applied left your hair looking dry and brittle. If you’ve tried to repair your hair for more than six weeks with no success, then the damage to your hair could be irreparable.
Dye disaster Your hair could be perfectly healthy but if you decide to experiment with hair dye and it goes completely wrong, then you should consider cutting your hair. Applying multiple dyes to your hair will only cause more damage.