I have long dark very thick bush like hair. It has always been in reasonable condition and was fine with me colouring it at home and straightening it for years.
I switched to having a hairdresser come to my house and do the colour (cheaper than a salon so could afford it) she lightened it a tad and put highlights in for maybe a year and a half.
Now it is all of a sudden very very very tangly. Matted. Straight out the shower, matted, have to hack at it with hairbrush then if I put it in a ponytail when I take it down it is matted underneath again? Almost dreadlocked.
I have never had this before.
I assumed it was damage from colour she was using so coloured it myself a little darker then started using special conditioners, washing with conditioner only etc. but it is still the same 
Can I rescue it? I usually use tresemme heat or colour protect.
Do you think it is definitely the colouring or is it possible it could be due to other changes, health for example?