EP3261519A1 - Verfahren zur untersuchung von sonnenschutzmittteln auf der haut - Google Patents
Verfahren zur untersuchung von sonnenschutzmittteln auf der hautInfo
- Publication number
- EP3261519A1 EP3261519A1 EP16704129.2A EP16704129A EP3261519A1 EP 3261519 A1 EP3261519 A1 EP 3261519A1 EP 16704129 A EP16704129 A EP 16704129A EP 3261519 A1 EP3261519 A1 EP 3261519A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- skin
- filter
- light
- camera
- protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0077—Devices for viewing the surface of the body, e.g. camera, magnifying lens
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/48—Other medical applications
- A61B5/4848—Monitoring or testing the effects of treatment, e.g. of medication
Definitions
- the present invention relates to a method for investigating the UV protection properties of one or more UV photoprotective filters in a cosmetic preparation applied to the skin, characterized in that the cosmetic preparation is applied to the skin, the skin treated with the cosmetic preparation with light irradiated whose spectrum includes the absorption band of the UV filter to be examined and during this irradiation, the image of the skin is recorded with a camera, the camera is equipped with a UV bandpass filter of the wavelength range, which is also the absorption band of the UV filter to be examined and the use of the method.
- UVA and UVB filters are summarized in most industrialized countries in the form of positive lists such as Appendix 7 of the Cosmetics Regulation.
- UV photoprotective filters UV filters
- abrasion resistance for example when drying wet, sunscreen-treated skin through a towel after a bath
- UV filters UV-protection filters
- a method for investigating the UV protection properties of one or more UV light protection filters in a cosmetic preparation applied to the skin characterized in that
- the cosmetic preparation is applied to the skin
- the skin treated with the cosmetic preparation is irradiated with light whose spectrum includes the absorption band of the UV filter to be examined,
- the image of the skin is taken during this irradiation, the image of the skin with a camera, wherein the camera is equipped with a UV bandpass filter of the wavelength range, which also corresponds to the absorption band of the UV filter to be examined.
- the brightness of the images (or image sections) recorded with the camera is related to the brightness of images (or image sections) of untreated skin which were obtained after process steps ii) and iii) and / or with images (or image sections) in which the UV light has been completely absorbed, as well as the formation of the differences of both image series for the determination of the absorption in percent compared to the standard (untreated skin or total absorption).
- the method according to the invention is advantageously characterized in that the load is a Ab Hughes- or bathing process, an abrasion process, irradiation with UV light, heat or cold or the production of body sweat.
- the already known load tests for determining the water resistance, weld strength, etc. can be used (see, for example, Schtex, K., Schtex, A., The sun protection factor determination: testing of water resistance, Akt dermatol. (20), 130 (1994)) ,
- the method according to the invention is characterized in that after the loading process the measuring procedure is repeated according to method steps ii) and iii) and the difference between the two measurements, before and after the physical and / or chemical, reproducible load, is formed in order to compensate for the loss of or to determine the UV sunscreen on the skin through the stress process.
- the skin treated with the cosmetic preparation is again irradiated with light after exposure, the spectrum of which contains the absorption band of the UV filter to be examined and during this irradiation the image of the skin is taken with a camera, the camera being equipped with a UV Bandpass filter of the wavelength range is equipped, which also corresponds to the absorption band of the UV filter to be examined.
- Embodiments of the method according to the invention that are advantageous according to the invention are characterized in that the UV band-pass filter can transmit UV radiation in the wavelength range from 300 nm to 400 nm.
- the UV bandpass filter Baader U Baader Planetarium GmbH HWB 60nm, central wavelength 350nm
- this camera requires the antialiasing filter in front of the camera sensor to be removed.
- the camera is set in picture mode Monochrome.
- the determination of the gray scale tones of the images i.e., the brightness of the images or image sections
- image analysis using the program ImageJ platform-independent image editing and image processing program, program and source code are public domain
- Embodiments of the method according to the invention that are advantageous according to the invention are characterized in that the illuminance of the light on the skin is from 0.25 WITT 2 to 40 Wnr 2 .
- the amount of the applied sunscreen before the physical and / or chemical load of 0.8 to 2.0 mg / cm 2 .
- Not least according to the invention is the use of the method according to the invention for determining the UV-A protection, UV-B protection, water resistance, abrasion resistance, perspiration resistance, thermal stability and / or UV stability of cosmetic sunscreen agents on the skin.
- a test set-up for the determination of different sun protection factors of sunscreens consists of:
- a lens e.g., Canon Macro Lens EF 100mm
- a UV bandpass filter e.g., Baader U-Filter 320-380nm
- the structure provides that the lighting units are mounted on the left and right of the tripod with an orientation on the center of the tripod plate.
- the distance of the lights to the test area is approx. 35 cm.
- the camera with lens and UV bandpass filter is attached to the repro arm and is about 55 cm away from the test area.
- test area As a test area, a 5x5 cm 2 field is drawn on the inside of the forearm per product. On each test area, a quantity of 2 mg / cm 2 of the respective product is applied and distributed evenly with one finger finger each protected finger. Thereafter, the products each take 30 seconds.
- the recordings of the respective test areas are carried out with 1/60 exposure time, f4.0 and ISO6400.
- a measure of the sun protection factor of the respective product is the average gray value of the photographed area.
- An image processing program eg ImageJ
- ImageJ image processing program
- a defined area is evaluated, which corresponds to a real area of about 4x4 cm 2 .
- images are taken before the application (time t0), after the application (time t1) and after a towel abrasion (time t2).
- the towel was rubbed off with a standard towel with 12 abrasions (3 in each direction) on the dry skin on each area.
- Table 1 The results of this experimental setup are shown in Table 1.
- Table 1 Mean gray value before (tO) and after (t1) the application of sunscreen products with an SPF of 10 or 50 and after rubbing with a towel 12 times (t2)
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Cosmetics (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015203509.3A DE102015203509A1 (de) | 2015-02-27 | 2015-02-27 | Verfahren zur Untersuchung von Sonnenschutzmitteln auf der Haut |
PCT/EP2016/000219 WO2016134825A1 (de) | 2015-02-27 | 2016-02-09 | Verfahren zur untersuchung von sonnenschutzmittteln auf der haut |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3261519A1 true EP3261519A1 (de) | 2018-01-03 |
Family
ID=55353164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16704129.2A Ceased EP3261519A1 (de) | 2015-02-27 | 2016-02-09 | Verfahren zur untersuchung von sonnenschutzmittteln auf der haut |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP3261519A1 (de) |
CN (1) | CN107257649A (de) |
AU (1) | AU2016223870B2 (de) |
BR (1) | BR112017016998A2 (de) |
DE (1) | DE102015203509A1 (de) |
WO (1) | WO2016134825A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017201947A1 (de) | 2017-02-08 | 2018-08-09 | Beiersdorf Ag | Kosmetischer Sonnenschutzstift |
CN107101964B (zh) * | 2017-04-27 | 2019-05-07 | 山西医科大学 | 一种颗粒型物理防晒剂紫外防护能力的评价方法 |
CN110610493B (zh) * | 2019-09-29 | 2022-03-11 | 厦门美图宜肤科技有限公司 | 图像处理方法、装置及电子设备 |
CN115326506B (zh) * | 2022-08-09 | 2023-04-18 | 广州莱德璞检测技术有限公司 | 一种多功能化妆品防水性能检测系统及方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08210974A (ja) * | 1995-02-07 | 1996-08-20 | Shigeru Sakai | 紫外線吸収度測定装置 |
US6961517B2 (en) * | 2001-11-08 | 2005-11-01 | Johnson & Johnson Consumer Companies, Inc. | Method of promoting skin care products |
JP4707332B2 (ja) * | 2004-05-11 | 2011-06-22 | 株式会社資生堂 | サンスクリーン化粧料の塗布状態判定方法及びサンスクリーン化粧料の洗浄性判定方法 |
JP5612846B2 (ja) * | 2009-10-08 | 2014-10-22 | 株式会社 資生堂 | 皮膚外用剤の塗りむら評価方法、塗りむら評価装置、及び塗りむら評価プログラム |
CN102331399A (zh) * | 2011-09-02 | 2012-01-25 | 东华大学 | 通过太阳光紫外光谱检测化妆品uva防晒效果的方法 |
US9173570B2 (en) * | 2012-04-12 | 2015-11-03 | Thomas Nathan Millikan | Viewing and processing multispectral images |
CN104359840B (zh) * | 2014-10-21 | 2017-01-18 | 中国检验检疫科学研究院 | 一种化妆品防晒能效的检测方法 |
-
2015
- 2015-02-27 DE DE102015203509.3A patent/DE102015203509A1/de not_active Withdrawn
-
2016
- 2016-02-09 WO PCT/EP2016/000219 patent/WO2016134825A1/de active Application Filing
- 2016-02-09 CN CN201680011409.0A patent/CN107257649A/zh active Pending
- 2016-02-09 AU AU2016223870A patent/AU2016223870B2/en not_active Ceased
- 2016-02-09 EP EP16704129.2A patent/EP3261519A1/de not_active Ceased
- 2016-02-09 BR BR112017016998-3A patent/BR112017016998A2/pt active Search and Examination
Also Published As
Publication number | Publication date |
---|---|
AU2016223870A1 (en) | 2017-07-20 |
CN107257649A (zh) | 2017-10-17 |
DE102015203509A1 (de) | 2016-09-01 |
WO2016134825A1 (de) | 2016-09-01 |
AU2016223870B2 (en) | 2020-02-27 |
BR112017016998A2 (pt) | 2018-04-10 |
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