Lack of moisture in the skin causes the oil and moisture balance to collapse, and when the scalp is dry due to lack of moisture, it causes dead skin cells, which is itchy and reduces scalp health. In particular, severe scalp dryness can lead to scarring and inflammatory reactions caused by itching, and in severe cases, hair loss. Moisture is segmented by the moisture value measured through the water sensor of the diagnostic device, then calibrated to possible deviations from device to device, and the result is calculated using a series of expressions.
Since there are sebaceous glands that secrete sebaceous glands near the hair of the scalp, sebaceous glands are relatively active compared to skin areas. In addition, because blood vessels and nerves are more abundant and highly sensitive, they are easily affected by factors such as sunlight and stress, and if the secretion is excessive, it binds to dead skin cells and blocks pores, causing problems. The oil on the scalp uses PPL to detect the amount of sebum accumulated on the skin.
The scalp is a part of the skin and basically has a similar structure, but it has more blood vessels and hair follicles than other skins, and is complex and has more sebaceous glands. Excessive secretion of sebum in the scalp causes hair loss, and the secreted sebum blocks pores in the scalp, reducing nutrition and circulation to the hair, turning the scalp red and locally red, affecting the thickness of the hair. Use UVL lighting to photograph the scalp and measure the amount of sebum.
Keratin is a type of fibrous protein, and the outermost layer of the skin consists of this protein. It breaks off as new cells are created, some of which accumulate under the hair follicles near the top layer of the skin. It is too small to detect normally, but when mixed with oil, it forms a layer, causing various scalp or hair problems. Dead skin cells are detected as white, but cannot be detected accurately by a simple brightness comparison, so they block scattered light from white light (White LED) to check the condition of dead skin cells more clearly and accurately. However, since the area around the relatively dark hair becomes bright, first detect the bright area around it, remove the value of the hair, and then calculate the area of dead skin cells.
Hair shrinks due to aging, accumulation of chemicals due to perm or dyeing, pore contraction due to scalp waste, wrong eating habits, and stress, except for the original condition. In general, depending on the thickness of the hair, 0.05-0.07mm is thin, 0.08-0.09mm is normal, 0.1-0.15mm is thick, and it is one of the important factors in determining hair loss. The thickness of the hair automatically analyzes the thickness of the hair when you select it from the captured image, and the average value is calculated and displayed when multiple hairs are analyzed.
The lifespan of newly grown hair by cell division is 3-6 years, and the hair degenerates and enters the resting period. After three to five months, new hair slowly comes back up and pushes the dormant hair out, which is repeated for life. As regression becomes more severe, the time for normal hair to be maintained is shortened, resulting in a decrease in the number of normal hair. Hair density analysis measures the average number of hair over a defined size, and when the number of hair per pore is touched, the analysis program calculates the current number of hair from the captured image based on the hair detection method. Hair density analysis is also used to determine hair loss conditions.
When the scalp is tense due to stress, overwork, etc., causing blood circulation disorders and thinning tissues, the result is itchy, red spots, or capillaries on the surface. As capillaries expand like this, sensitive scalp is very sensitive to mild stimuli such as irritation or fever, and only light reflected on the surface of the scalp can be blocked to check the sensitive reaction of the skin layer under the scalp. The sensitivity figure is calculated as a brightness value, giving the first weight according to the degree of darkness and the second weight to the degree of darkness around the surroundings. The hair is detected separately and removed in advance, and the index is calculated by combining the two and dividing them by the image size value.
Hair Loss refers to the absence of hair in the area where hair should normally be present. The causes of hair loss are genetic causes, male hormones such as androgen, immune diseases, and scalp diseases, as well as physical and mental stress such as nutritional deficiency, drug use, childbirth, and fever. For hair loss, after photographing the location of each scalp, the thickness and density of the hair are analyzed to identify the type first and display the results.
The scalp condition displays the results by combining the results of the questionnaire to determine environmental factors that cannot be confirmed only by diagnosis and the oil and moisture status of the scalp.