Can I use a shampoo and conditioner on a regular basis 2 weeks after a FUT hair transplant? Is there a particular brand?

I plan to start using after 2 weeks of my FUT (1800 grafts), is it recommended? My hair get very oily and unmanageable after I wake up in the morning and hence I need to shampoo everyday. Is it ok and is there a particular brand I should be using? I am currently using Pure or Tea Tree hair thickening shampoo that is supposed to stop hair loss. And I don’t use a conditioner since it increases my hair loss. Should I be using a conditioner as well?