Hair Care Product Claims 502 at the tips. While the presence of lubricating ingredients can again lower frictional forces, products generally show considerably lesser benefit than seen with wet state testing. That is, dry combing forces are already low, and so lubrication does not provide such drastic effects. As a consequence, there is a diminished ability to distinguish between the performances of different formulations. Furthermore, it is noted that wet state combing and detangling is generally a much greater consumer concern, while also occurring when the hair is in a significantly more vulnerable (weaker) state. Therefore, historically, wet state testing tends to be considerably more prevalent than the dry state equivalent. In order to effectively demonstrate lubrication, and differentiate between relatively similar products, there is first the need to generate significant grooming forces in the unconditioned state. This can be achieved through a combination of variables, including the size and shape of hair tresses, the condition of the hair, and the nature of the comb. Obviously, higher combing forces can be generated by using larger and thicker tresses that contain a higher number of fibers, although this strategy is accompanied by an increase in hair costs. Instead, a more practical approach involves the use of chemical treatments* to induce a degree of damage, and subsequently increase the grooming forces. In support of this approach, it is noted that a high percentage of all women regularly utilize a least one such treatment (e.g. bleaching, coloring, perming, relaxing), and thus chemically treated hair would seem to be more representative of real-life conditions than the pristine hair generally obtained from the various suppliers. This said, the contribution of the comb itself should not be forgotten, where tighter spacing between the teeth will also result in higher combing forces. In summary, the use of chemically damaged hair, in combination with a narrow toothed comb, results in a cost-effective approach for performing this testing. *Please note that care should be taken when using commercially available chemical treatments to induce damage as these products often contain conditioning agents themselves. Therefore, these materials may remain behind on the hair and interfere with later
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