As a challenge to myself in incense making, i had been able to make incense sticks containing up to 40% borneol. Whilst most people are afraid to even use 3%, there is a special way to work around with borneol, such that at very high concentrations there is no acridity nor sharpness, but a deep coolness. the feeling of going into an airconditioned room on a hot day.
Yukinoshi, which means, beneath the snow, is a sandalwood, frankincense base with 20% borneol. it is an incense that was crafted to allow one to create the experience of a cool weather/winter feel.