What shampoo & conditioner should i use to treat dry, damanged, str8, & fine hair?

i have dry, damanged, str8, %26amp; fine hair. whats the best shampoo %26amp; conditioner to use? i will be getting my hair cut, an dyed.What shampoo %26amp; conditioner should i use to treat dry, damanged, str8, %26amp; fine hair?
I use Folicure for thinning hair, I buy mine from sally's