Skin evaluation method, skin care product or cosmetic recommendation method

Abstract

The invention provides a skin evaluation method and a skin care product or cosmetic recommendation method by the use of a laser speckle blood perfusion imaging instrument. The skin evaluation method comprises a shooting step, an imaging step, an area selection step and an evaluation step. In the shooting step, a video with specified time and showing surface blood signals of a cleaned face is shot. In the imaging step, all pixels, representing the blood signals, of the video are averaged so as to obtain face blood perfusion images. In the area selection step, blood vessel distribution parts different from other parts of the face are removed, and the residual parts are selected as evaluation zones. In the evaluation step, evaluations on blood perfusion amounts are carried out, and therefore the skin is evaluated. By employing the skin evaluation method, multiple different skin test indexes can be evaluated through a single apparatus, and therefore a test process is simplified and accelerated.

Description

technical field [0001] The invention relates to a method for evaluating skin and a method for recommending skin care products or cosmetics, in particular to a method for evaluating skin by using blood perfusion. Background technique [0002] LSPI (Laser Speckle Perfusion Imaging) is a laser speckle blood flow imaging video system for non-invasive surface tissue blood perfusion imaging. Figure 14 is a view representing LSPI, and its basic principle is the principle of laser speckle. [0003] Laser Speckle Contrast Analysis (LASCA) technology can make instantaneous changes in microcirculatory blood perfusion visible to the naked eye. The imaging technique has high resolution and fast sampling frequency. [0004] When the target is irradiated by the laser beam, the reflected laser forms a random interference image (including bright and dark areas), which is called a laser speckle pattern. If the measured object is stationary, the laser speckle pattern also remains unchanged....

AI Technical Summary

Problems solved by technology

[0007] However, there are no related studies on the application of LSPI to the evaluation method of various skin characteristics

[0008] In addition, in the current evaluation method for skin, evaluation of skin color, skin barrier function i.e. water loss (TEWL), sebum secretion, etc. requires various measurement equipment, resulting in increased measurement time and cannot be obtained by a single test. Various skin evaluation results

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