MultiSal™ Menthol is a double encapsulation delivery
system infused with menthol. The menthol is first
encased in sub-micron spheres, approximately 0.1 to
0.3 microns in diameter, then encapsulated again
within an outer microsphere shell that is about 30
microns in diameter (Figure 1). The extra protection
results in a less intense menthol odor and maintains
the menthol in its potent form. The system is activated
by water, at which point the outer microsphere will
break down and release the sub-micron spheres.
These smaller spheres will then slowly release the
menthol to provide a long-lasting cooling sensation.