| 摘要 |
Device for measuring hair damage comprising a handle (2) and a shaft (3) and a mandrel, a clip (4) and a feedback indicator, wherein the mandrel and clip are attachable to the shaft and the mandrel is drivable along the length of the shaft to measure the friction of a lock of hair which is wound around the mandrel and back onto itself and held in place by the clip such that fibres in the lock of hair are rubbed against themselves along the general direction of the hair fibres and use of such a device. |
