sebumeter.pptx

sebumeter
principle of sebumeter
methods of sebumeter
mechanism of sebumeter

1. SEBUMETER Presented By : Ms.Heera Karemore Assistant Professor (Pharmaceutical Chemistry)

2. Sebumeter Sebumeter is a device by which sebum can be quantified from any area of skin in an objective manner. It was invented by Antoine Kawam , who patented it in the year 1992.

3. PRINCIPLES OF SEBUMETER Excess oiliness or excess dryness affects cosmetic appearance of the skin. Hence, estimation of oiliness is important to decide on the correct regimen to achieve cosmesis. Sebum is an oily secretion from the sebaceous gland. Sebum waterproofs and lubricates the skin and hair of mammals. Sebum affects the permeability of skin and absorptivity of water. It protects skin against bacteria, fungi. It limits evaporation, permeation of pharmaceutical preparation and other active and non-active substances

4. METHODS TO MEASURE SEBUMS wabbing by pads soaked in organic solvents such as hexane or ether. • Washing lipid solvents over areas of skin circumscribed by rings or caps. • Placing a pad of absorbent cigarette papers for on the skin surface and then extracting the sebum with diethyl ether

5. SEBUMETER PROBE (CASSETTE) The measuring head of the cassette exposes a 64 mm measuring section of the tape. • For a measurement the tape is transported forward by a trigger at the side of the cassette to expose a new section of the tape. • One cassette can be used for approx. 450 measurements. • The scale from 1-0 on the trigger shows how much of the tape is still unused. • For hygienic reasons when exhausted, the cassette is simply replaced. A spring in the measuring head provides constant pressure on the skin. Its low weight makes handling easy.

6. Mechanism of Sebumeter • It is based on the principle that when sebum is deposited on a translucent element, such as a frosted glass or plastic plate or strip, the element becomes increasingly transparent. • Greater the amount of sebum applied, the greater is the transparency produced. • The measuring head of the cassette with its special tape is placed on the skin. • It is then inserted into a slot of the device. • Light passing through this sebum covered translucent element is then measured using a photoelectric receiver. • A microprocessor calculates the result, which is shown on the display in mg sebum/cm2 of the skin.

7. THANK YOU !