Abstract: A hair treatment method for curling a lock of hair using a hair holder. The hair holder includes a tubular body which has an opening located at a first end and an opening located at a second end of the tubular body, and configured to allow a lock of hair be inserted from the first end opening of the tubular body toward the second end opening and to be capable of being rolled up. The method includes inserting a lock of hair into the hair holder, rolling up the tubular body together with the lock of hair inserted therein, so that the number of turns of the lock of hair is less than one, and curling the lock of hair in this wound state. A hair holder in which the tubular body is configured to be wound less than one turn is suitably used in this hair treatment method.

Abstract: A hair holder including a tube configured to allow a hair bundle to be inserted from a one-end opening toward an other-end opening. The hair holder is designed to allow hair treatment to be applied inside the tube to the hair bundle by supplying a hair treating agent into the tube. A hair-treating-agent leak-prevention member is provided on an inner-surface side of the tube in the vicinity of the one-end opening, the hair-treating-agent leak-prevention member achieving an effect of preventing leakage of the agent when pressed against the hair bundle.

Abstract: A hair holder including a tube configured to allow a hair bundle to be inserted from a one-end opening toward an other-end opening. The hair holder is designed to allow hair treatment to be applied inside the tube to the hair bundle by supplying a hair treating agent into the tube. A hair-treating-agent leak-prevention member is provided on an inner-surface side of the tube in the vicinity of the one-end opening, the hair-treating-agent leak-prevention member achieving an effect of preventing leakage of the agent when pressed against the hair bundle.