Type 1 hair is the type that's generally straight, though not all type 1 hair is the same. 1A hair is fine and straight, and can often look lifeless and weighed down if there's too much product in it, while 1B hair (like Kendall Jenner's) tends to have a slight bend in it. 1C hair is mostly straight with a few waves, and it's usually thicker than the other type 1 hair types and more prone to frizz.
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