How do salons deep condition your hair?

Does anyone know any videos or something that shows how they do it?How do salons deep condition your hair?
they put in the conditioner and put a plastic cap on your head and make you sit under the dryer for about 10-15 mintues. you could do it at home if you dnt have a dryer you could use a warm towelHow do salons deep condition your hair?
All they do is apply it to your hair like a normal conditioner, put your hair up in a plastic cap and let you sit for like 10 minutes. They may put you under the dryer.