Though the main assumption about pigs is that they are very dirty animals, in fact, they will usually only get muddy or dirty when provided with a much needed outside area to gain vitamin D from sun / rooting soil and grass for a diet, and use the mud as a sunscreen or cooling agent to keep their body temperature regulated.
32.
While the cooling strength of 3-( l-menthoxy ) propane-1, 2-diol ( also known as Cooling agent 10 [ tradename of Takasago ] ) is accepted as being about 20-25 % that of menthol, it is also noted that " in a Vaseline ointment, 3-( l-menthoxy ) propane-1, 2-diol shows a cool feeling 2.0 to 2.5 times stronger than that of l-menthol ".
