Skin Analysis: Training Dermatone

About Skin
Dermatone Skin Analyser - Tips & Training
Youth Beauty Ltd.Laser and light based treatments of the skin for various dermatological and cosmetic conditions are influenced by the skin tone darkness. The settings that are used on the laser and light based treatments must be adjusted according to the skin tone darkness. Physicians, nurses, and technicians who operate such lasers and light based treatments have a difficult time in accurately assessing the skin tone darkness by simply looking at the skin.

The Dermatone Skin Analyzer was invented to assist in such situations.

Skin tone is mainly influenced by the concentrations of melanin, haemoglobin, and various other skin pigments. Melanin, haemoglobin, and other skin pigments tend to absorb light energy at different wavelengths of light. The higher the concentrations of these structures within the skin, the more energy is absorbed by the skin. Laser and light based treatments are also influenced by the skin reflection properties. As the skin becomes more reflective, it absorbs less light and thus reflects more light.

All of these factors combined will affect how much energy is absorbed by the skin during a laser or light based treatment.

The Dermatone Skin Analyzer measures human skin tone darkness which is dependent on skin reflection properties and the concentrations of melanin, haemoglobin, and other pigments within the skin. The Dermatone Skin Analyzer uses a light emitting source to generate wavelengths of light within the spectrum of light visible to the human eye. The device is placed over the skin to be analyzed and the generated light is directed towards the skin through a hole at the tip of the device. A light sensor which is sensitive to the light within the emitted spectrum is used to measure the amount of light which is reflected from the skin.   The device is portable and is powered by a standard
9-volt battery which can be easily replaced.

When the battery level is low and needs to be replaced,
the device's digital circuitry will inform the user by displaying
a message on the LCD display.

Based on the various wavelengths and intensities of light absorbed by the sensor, the device uses a digital circuit to analyze and convert the data into a number which correlates to the skin tone darkness. The digital circuit is comprised of electrical components and microchips which are programmed to perform the calculations. The device includes an LCD (liquid crystal display), which displays the readings and messages sent by the digital circuit.

The skin tone darkness will depend on various factors such as the concentrations of melanin and haemoglobin in the skin, as well as the skin's reflection properties. As the skin's concentrations of melanin and haemoglobin increase, the skin will absorb more light and thus reflect less light. The device analyzes and correlates the light measured by the sensor to display a number which correlates to the skin tone darkness. The readings are also influenced by the skin's reflection properties. As the skin becomes more reflective, it absorbs less light and thus reflects more light.

The light sensor will detect the amount of light reflected by the skin and will calculate the skin tone darkness based on its programmed parameters. The calculated skin tone is then displayed to the user on the LCD display.

The device also utilizes a calibration function programmed into the digital circuitry. The calibration function allows the user of the device to calibrate the device on a regular basis to ensure accurate readings by the device. The calibration involves performing 5 consecutive measurements on a series of 5 images of different tones of darkness. The images are a standard set of images used for calibrating all manufactured devices. The digital circuitry of the device is pre-programmed with the tones of the calibration images and it calibrates its calculations based on the calibration results. The digital circuitry has an EPROM memory which remembers the results of the calibration even if the device is turned OFF.


Recording Skin tones

  Correlation of Dermatone Skin Tone Readings And Fitzpatrick Skin Types:
Skin Type I-------------Skin Tones 35-50
Skin Type II------------Skin Tones 50-60
Skin Type III-----------Skin Tones 60-75
Skin Type IV-----------Skin Tones 70-85
Skin Type V------------Skin Tones 80-100
Skin Type VI-----------Skin Tones 95-127

Please note that the Fitzpatrick skin types are very subjective and an inaccurate way of classifying skin tones. One person may label a patient with a different Fitzpatrick skin type as compared to another person. The Dermatone Skin Analyzer will give you a much more accurate reading of your patient's skin tone.

Because of the subjective value of Fitzpatrick skin types, you will find that there is a considerable overlap with the above table's comparison of the Dermatone skin tone readings and perceived Fitzpatrick skin type.

The Dermatone Skin Analyzer is best used to compare your patient's skin tone from one treatment to the next, in order to be able to tell if the patient's skin is lighter or darker than before.





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