With that being said product also plays a big part in keeping your hair soft. I have two shampoo and conditioner combos that I love equally.
Herbal Essences makes this shampoo and conditioner called Hello Hydration and it is AMAZING. It leaves your hair lovely and soft. What's the best thing about it? It smells like coconut! Something I sometimes do is buy the shampoo and conditioner in 1 and then also use the conditioner.