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Pollution protection factor of cosmetic compositions

A cosmetic composition and composition technology, applied in the direction of cosmetics, cosmetic preparations, dressing preparations, etc., can solve problems such as difficult to achieve

Pending Publication Date: 2021-11-26
UNILEVER IP HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

RSF>2 (meaning 50% free radical protection) is said to be difficult to achieve

Method used

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  • Pollution protection factor of cosmetic compositions
  • Pollution protection factor of cosmetic compositions
  • Pollution protection factor of cosmetic compositions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0117] Several cosmetic compositions of known formulations were selected for the experiment. They are cleansers, day creams, night creams, body lotions and light hydrating gels. Actives are often used in such and / or given detailed formulations.

[0118] The compositions were subjected to a series of analyzes as follows:

[0119] — via Vitro Skin TM fluorescent particles are used to determine α

[0120] - Determination of β by pollutant permeation assays, or by ex vivo barrier models

[0121] - Determination of gamma by cellular ROS assays or cell-based cytokine assays or by measurement of SPF

[0122] Observations are summarized in Table 2.

[0123] Table 2

[0124]

[0125] ** As calculated according to formula F

[0126] The examples shown clearly indicate that the method according to the invention is a robust and reliable tool for measuring and comparing the efficacy of cosmetic compositions against atmospheric pollutants. This method can be used to measure and d...

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PUM

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Abstract

Disclosed is a method of determination of a pollution protection factor (PPF) of a cosmetic composition, comprising: (a) a step of testing, by any known test method, the ability (alpha) of the cosmetic composition to render ineffective at least one type of pollutant present on the skin and expressing it on a scale of 0 to 1, followed by calculating said PPF by equation A, where (1 - alpha) indicates corresponding potential residual damage to the skin wherein said composition comprises at least one ingredient known to render ineffective said at least one type of pollutant and said at least one ingredient is an anti-inflammatory or antioxidant; or alternatively, (b) a step of testing, by any known test method, the ability (beta) of the cosmetic composition to inhibit the contact of at least one type of pollutant with skin and expressing it also on a scale of 0 to 1, followed by calculating said PPF by equation B, where (1 - beta) indicates corresponding potential residual damage to the skin wherein said composition comprises at least one ingredient known to inhibit the contact of at least one type of pollutant with skin and wherein said ingredient is a sunscreen, a barrier enhancer or a polymer; or further alternatively, (c) a step of testing, by any known test method, the ability (gamma) of the cosmetic composition to remove at least one type of pollutant present on the skin, expressing it also on a scale of 0 to 1, followed by calculating said PPF by equation C, where (1 - gamma) indicates corresponding potential residual damage to the skin.

Description

technical field [0001] The present invention relates to a method of evaluating the degree of protection from atmospheric pollutants provided by a cosmetic composition and using this evaluation to assess the efficacy of the composition and, if desired, compare it with other compositions. Background technique [0002] According to the World Health Organization (WHO), outdoor air pollution originates from both natural and anthropogenic sources. While natural sources contribute significantly to localized air pollution in arid regions that are more prone to forest fires and dust storms, there are also significant contributions from human activities. [0003] Such human activities include fuel combustion, heat and power generation, and industrial facilities (eg, manufacturing plants, mines, and refineries). Pollutants can be categorized as particulate matter, black carbon, ground-level ozone, and oxides of carbon, nitrogen, and sulfur. [0004] Particulate matter (PM) is respira...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/00A61K8/00A61Q17/00
CPCA61B5/4848A61B5/445G01N33/5088G01N33/6863
Inventor B·J·多布科夫斯基黄楠孟晟
Owner UNILEVER IP HLDG BV
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