If you're not sure if you have 1B hair, there are a few things you can look for. First, 1B hair is usually pretty straight. It may have a slight wave to it, but it shouldn't be too curly. Second, 1B hair is usually a bit thinner than other types of hair. This means that it can be difficult to get volume and body with this type of hair. Finally, 1B hair is typically a bit dryer than other types of hair. This means that it may need more moisture and conditioning to stay healthy and looking its best.