Lack of standardised testing makes comparing nano skin tests hard
Study reemphasises that nanoparticles don’t penetrate the skin
Nanoparticles in products, such as cosmetics, are unlikely to penetrate the skin but are more likely to do so if the skin is damaged, a new report has confirmed. However, it notes that the lack of standardised, validated methods and the use of varying testing protocols made it difficult to compare and evaluate results.