The probe contains a rotating teflon disc which is applied on the skin surface. The frictional resistance is influenced by skin roughness, wrinkles and the skin care products on the skin surface. Consequently there is also a variety of different readings. It is possible to classify normal and dry skin, wrinkly and less wrinkled skin and appropriate changes of the skin condition after applying cosmetic products. This is an important aspect for the product development. It allows for instance to determine that a W/O emulsion offers better smoothing characteristics than an O/W emulsion. In addition, the penetrating capacity of a formulation can time-dependently be measured; if it stays on the skin for a long time there will be only a very insignificant change in the frictional values. A selection of different teflon discs is available.

Important: The readings are not transferred to the dermaviduals^® corneotherapy basic device as it is a separate device.

For a comprehensive instruction manual please refer to: http://www.courage-khazaka.de/. General information on skin diagnosis is available in the following publications (English translation):

• Hautdiagnose - an Messergebnissen orientieren, Kosmetik International 2007 (10), 54-56
• Hautanalyse - Befragung ergänzt Messung, Kosmetik International 2004 (8), 72-74
• Hautanalyse - moderne Geräte helfen, Kosmetik International 2003 (3), 102-104
• Geräte zur Hautanalyse, Kosmetik International 2001 (1), 90