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A kind of sunscreen sunscreen performance test method

A test method and technology of sunscreen, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve problems such as blisters in the sun, inconvenience to subjects, and long time

Inactive Publication Date: 2016-04-20
PEKING UNION MEDICAL COLLEGE HOSPITAL CHINESE ACAD OF MEDICAL SCI +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] At present, the SPF value of sunscreen is usually measured by using a xenon arc lamp solar simulator as an artificial light source. 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 exposes them to the sun. blister

Method used

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  • A kind of sunscreen sunscreen performance test 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 flow chart of the sunscreen performance testing method of sunscreen 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 test subject, take set numerical points and irradiate with different doses of ultraviolet rays, and take the lowest irradiation dose or the shortest irradiation time at which erythema appears on the sk...

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Abstract

The invention discloses a sun cream sun protection performance 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 obtaining a first minimum red spot amount of normal skins of the tested object, wherein the ultraviolet is ultraviolet with preset wavelength modulated by adopting a quasi-molecule laser; uniformly coating a sun cream sample to be tested on the second test area on the back skins of the tested object according to a dosage of 2mg / cm<2>, determining a preset number of points, irradiating the points with different dosages of ultraviolet light, and obtaining a second minimum red spot amount of the skins of the tested object under protection conditions, wherein the ultraviolet light is ultraviolet light with preset wavelength modulated by the quasi-molecule laser; dividing the second minimum red spot amount by the first minimum red spot amount to obtain the sun protection factor of the sun cream sample to be tested; and calculating the arithmetic mean value of the sun protection factors of various tested objects, and determining the integer part of the arithmetic mean value as the final sun protection factor of the sun cream sample to be tested.

Description

technical field [0001] The invention relates to the field of cosmetics, in particular to a method for testing sunscreen performance of sunscreens. 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] Sunscreen is a cosmetic with sunscreen effect, which can prevent the damage of ultraviolet rays to the skin. [0004] Labeling and promoting the sun protection effect of sunscreen is a common...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00
Inventor 王宏伟高晓譞
Owner PEKING UNION MEDICAL COLLEGE HOSPITAL CHINESE ACAD OF MEDICAL SCI
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