If you know the name of the shampoo check to see if it had cones. Cones will make my hair go flat and lose curl if I don't sulfate poo it out.
Now maybe that's not the case but it's better to find out than be frustrated by your hair for longer when you could just use a shampoo with no cones and then start your routine over again.
2c/3a?
Low porosity, medium texture.
http://public.fotki.com/Medusahair/

If it smells good put it in your hair, if it tastes good spit it out!