BASF develops new testing methods for anti-pollution claims


Systematic analyses target anti-adhesion, removability, anti-penetration and cleansing

BASF has developed what it calls a ‘comprehensive approach’ to testing formulations for anti-pollution efficacy.

The systematic analyses outlined by the company’s Care Chemicals division target four core mechanisms: anti-adhesion, removability, anti-penetration and cleansing.

The test results are then used to create new, effective skin care formulations offering protection against the adverse impact of particulate pollutants on skin health.

“We want to assist manufacturers in developing skin care products that demonstrably help shield the skin against particulate pollutants,” said Dr Annette Mehling, Senior Manager Skin Sciences.

“However, there is no ‘one-size-fits-all’ test for anti-pollution claims, as there are different types of pollutants and consequently several defence methods that may be needed to protect the skin effectively.

“This is why we have developed a series of new testing methods that allow for the scientifically sound evaluation of the performance of different cosmetic ingredients and formulations.”

For anti-adhesion and removability, BASF has designed a new standardised in vivo method which evaluates the ability of typical ingredients or formulations to decrease particle adhesion and/or improve their removability from pre-treated skin (ie rinse-off).

For anti-penetration it introduced an in vitro permeability model simulating the penetration of pollutants through the skin to test and identify ingredients that help to form a protective layer.

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When it comes to cleansing, or the active removal of pollutant particles, BASF’s method uses a collagen matrix as a model skin around which an in vitro test has been developed to allow for the evaluation of the cleansing performance of ingredients and formulations on polluted skin.

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