My hair is chipping off?

Ever since I dyed my hair (around 2-3 months ago now) the ends of my hair have been chipping off. No it's not my split ends before you tell me to cut them off because I have my hair cut regularly and I use heat protection every time I use heat on my hair which isn't very often anyway. I deep condition it every 2 weeks and I use Treseme luxurious moisture shampoo and conditioner. It's only on one side of my hair though :s it's causing it to look uneven as one side is now longer than the other! Please help :(