To give a meaning to the obtained results, two controls were included:
- cells that were not exposed to vapor, indicated in the chart as ‘Control’;
- cells treated with the vapor of Traditional Base, thus a product without the aromatic component.
The functionality of the barrier is measured as the resistance to current passing after exposure to vapor, and compared in percentage to the value before exposure.
Therefore, a value of 100% indicates that there were no changes in the integrity of the barrier; a higher value indicates that the cells have continued their physiological growth inadhesion. A value below 100% indicates that the barrier was damaged.
TRUSTiCERT endorses only the products that result values not lower than 90%.