These tests verify a product‘s intended purpose by quantifying its effects on the skin of human subjects.  Efficacy testing is crucial to scientifically substantiating product claims with state-of-the-art measurement techniques.

This test determines the potential for irritation, sensitization and allergic contact of the product. It also confirms that repeated applications of the cosmetic product under maximized conditions do not induce delayed contact allergy reactions. 

The efficacy of the antimicrobial activity of the preservative in a formulation is tested by challenging the formulation with known bacteria, yeast and fungi.

These tests determine the shelf life of products and demonstrate how product quality varies with time and with different environmental factors, such as temperature and humidity. Product attributes such as color, phase separation, odor, extrusion, weight loss, pH, viscosity, density and microbial quality are tested over time.

Defined parameters (e.g., pH, viscosity, density, color, etc) are measured for each production batch to ensure consistency and functionality.