According to Krysta Biancone, “2C waves are typically defined as being between 2A and 2B. They have a more defined, loopy wave hair pattern that is generally a bit more voluminous than 2A or 2B. You can tell if your hair is 2B or 2C by looking at the wave pattern and feeling the texture.”
She adds, “If you’re not sure what type of waves you have, try running your fingers through your hair to feel for the texture and size of the waves. If they’re larger and more defined, it’s likely you have 2C waves.”