Measuring the frequency of consumer hair combing and magnitude of combing forces on individual hairs in a tress and the implications for product evaluation and claims substantiation

It is commonly assumed that, due to the long growth cycle of hair, multi-cycle combing, and strength and fatigue testing using thousands of cycles is relevant for product evaluation and claim substantiation. The objective was to assess the frequency and magnitude of combing forces on individual hairs against a hypothesis that fibres on a consumer’s head rarely experience significant loads during routine combing.