We wash all of Zander's clothes with ours & use Amolin liquid. Before we discovered Amolin, we jus washed his clothes in the same stuff as we used - I have super sensitive skin so figured what was ok for my skin would be ok for a baby's skin.

When I did Zander's first wash before he arrived I put al of the clothes in together, in a seperate load purely because there were so many! But once he started wearing them they went in with ours.