If you're used to sudsing up your locks with shop-bought liquid shampoos, getting used to using a handmade shampoo bar can take a bit of getting used to, but it's well worth it—I promise. I've been using my handmade shampoo bars for over five years and my hair has never looked better.
The first thing you'll want to keep in mind is that shampoo bars aren't nearly as strong as surfactant-powered liquid shampoos. This means you'll need to take care to actually wash all of your hair. I used to be able to just wash my roots, and the shampoo rinsing down the length of my hair would keep the length of it clean, but that's not the case with shampoo bars. Make sure you suds up the full length of your hair or you'll find your hair can start looking lanky and greasy.
Secondly, handmade shampoo bars are quite basic, so after we use them, we need to pH balance our hair. The tiny scales that make up our hair lift up when we wash them with something basic, and if we don't smooth them back down with a mild acidic rinse, you'll notice your hair will become quite tangled and rough. An acidic rinse is incredibly easy to make, though—simply mix 2 tablespoons of apple cider vinegar with 1 cup of water and use that to rinse your hair from the ears down (avoid your roots—the acidic rinse will make roots look greasy much faster).
You can also learn more and get new hair rinse recipes on my blog, Humblebee & Me.