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Cosmetic photosensitivity testing method

A testing method and technology of cosmetics, applied in the direction of measuring devices, material analysis through optical means, instruments, etc., can solve the problems of inconvenient test subjects, blisters in the sun, long time required, etc.

Inactive Publication Date: 2015-02-25
PEKING UNION MEDICAL COLLEGE HOSPITAL CHINESE ACAD OF MEDICAL SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, xenon arc lamp solar simulator is generally used as an artificial light source to measure the photosensitivity of cosmetics. It needs to be equipped with a complex filtering system for ultraviolet radiation, and it takes a long time, which causes a lot of inconvenience to the subjects and even causes blisters.

Method used

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  • Cosmetic photosensitivity testing method

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] figure 1 It is a flowchart of a photosensitive test method for cosmetics according to an embodiment of the present invention. As shown, the method includes the following steps:

[0024] S110, select the first test area on the back skin of the subject, take the set value points and irradiate with different doses of ultraviolet rays, and use the lowest irradiation dose or the shortest irradiation time for skin erythema to be the minimum amount of erythem...

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Abstract

The invention discloses a cosmetic photosensitivity testing method. The method comprises the following steps: selecting a first test area on back skins of a tested object, determining a preset number of points, radiating the points with different dosages of ultraviolet light, and adopting the lowest radiating dosage or the shortest radiating time for skin erythema appearance as a first minimum erythema amount of normal skins of the tested object, wherein the ultraviolet is ultraviolet with preset wavelength modulated by adopting a quasi-molecule laser; coating a patch pad with a preset amount of a cosmetic to be tested, and applying the patch pad to the second test area on the back skins of the tested object; uncovering the patch pad 24h later, wiping off the cosmetic to be tested residual on the second test area, and irradiating the second test area and a third test with a suberythema dosage of ultraviolet light, wherein the ultraviolet light is ultraviolet light with preset wavelength modulated by the quasi-molecule laser; and determining that the cosmetic to be tested is light-sensitive if erythema appears in the second test area and does not appear in the third test are 24h after the irritation of the suberythema dosage of ultraviolet light.

Description

technical field [0001] The invention relates to the field of cosmetics, in particular to a photosensitive test method for cosmetics. Background technique [0002] According to GB / T18830-2009, solar ultraviolet radiation refers to electromagnetic radiation with a wavelength of 280nm to 400nm. Among them, solar ultraviolet UVA refers to solar ultraviolet radiation with a wavelength in the range of 320nm to 400nm; solar ultraviolet UVB refers to solar ultraviolet radiation with a wavelength in the range of 290nm to 320nm; solar ultraviolet UVC refers to solar ultraviolet radiation with a wavelength in the range of 200nm to 290nm. A large number of studies have shown that excessive ultraviolet radiation is extremely harmful to the earth's ecosystem and human health. [0003] Photosensitivity can be divided into two categories: phototoxicity and photosensitivity. Phototoxicity is the sunburned skin reaction of cosmetic ingredients or photosensitive foods combined with sunlight,...

Claims

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Application Information

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IPC IPC(8): G01N21/01
Inventor 王宏伟高晓譞
Owner PEKING UNION MEDICAL COLLEGE HOSPITAL CHINESE ACAD OF MEDICAL SCI
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