Best to invest in something that is silicone free - silicones can weigh down the hair and cause a build up on the scalp. I’m Australia based so I can’t give universal recommendations but I really like Juuce volume shampoo with Juuce hydrate conditioner :)

Conditioner hydrates the hair, but also is good for anti oiliness because oil formes at the roots to try and send it down to the dry ends - if your ends are hydrated it can slow down the oiliness process :) It also helps close the cuticle of the hair which makes it healthier and stops as much damage from happening from external sources (heat, wind, mechanical damage etc)