Hold the knotted fluff, leaving the knotted part to gently comb with a comb. Do not use excessive force when encountering indurations, so as not to pull off the fluff. Hold down the hair root and comb. The fluff is easy to break when it meets the cutting edge, and it should be firm when combing. To remove the knots as soon as possible, the knots may need to be shortened as a whole when they become hard.