METHOD FOR MEASURING WET FRICTION OF HAIR

A method of measuring wet friction of hair, using a system comprising: i) a friction probe, having a contact surface, said probe fitted with a weight in the range of from 10 to 500 g; ii) a means for securing the bundle of hair; and iii) a water bath; wherein the friction probe is connected to a texture analyser;, said method comprising the steps of: i) providing a bundle of hair fibres; ii) aligning the hair fibres; iii) securing the bundle of hair fibres; iv) immersing the bundle of hair fibres under water in the water bath; v) contacting the hair fibres with the contact surface of the friction probe, which is fitted with the weight; vi) moving the probe along the hair fibres; and vii) recording the friction generated under step vi); wherein steps v) - vii) take place under water; and wherein steps vi) - vii) are repeated until a constant value is obtained, without lifting the probe from the hair.