Just wondered as keep seeing advers for garnier olia and the new Schwartzkopff olee (?) hair dyes and they look really good! I have damasked dry hair that had a level 7 put on last august. Obviously have a huge chunk of roots now and would really like to put another colour on but it’s so dry and has a lot of breakage. Would lightening it with one of the above dyes damage it even further?