Slow Drain-- Any Suggestions to Dump in the Drain?

Our bathtub is draining painfully slow and I want to get something that I can pour down the drain to dissolve the soap residue and hair that is probably clogging the drain. Is anyone married/ related/ friendly with a plumber?? Can you ask what I can put down the drain that won't damage the plumbing, but solve the problem of our slow drain. My husband doesn't want to snake the drain and he doesn't want to call a plumber either. Any suggestions? Thanks Mamas!