Do you leave your conditioner on for a few minutes in the shower? No need to waste your time! "This really doesn't make a difference," says Tricomi. "The effects of conditioners are instant because by the time you get to that step, your hair is swollen from water molecules, so the conditioner can't further penetrate your hair. Most of the benefits of standard formulas come from coating the hair's surface to smooth and protect the cuticle. And use a deep conditioner or hair mask just once a week."
