Antimicrobial efficacy testing is an useful step to screen the efficacy of ingredients/products in counteracting the bacteria involved in the onset/development of acne. The inhibitory concentration of the ingredient/product on Malassezia furfur growth is assessed through microbiological tests carried out according to the international recognized standards specifically adapted to the scope.
On humans antidandruff (oily and dry) efficacy is assses using both clinical and instrumental different techniques.
- Decreases dandruff appearance
- Clinical analysis
- Digital photo
- Self-assessment (consumer test)