If you want to rub clary sage oil on your belly, you should know that it’s not advisable to use any essential oil directly onto the skin, and it can cause an allergic reaction. To avoid any allergic reaction to clary sage oil, mix it with a carrier oil such as almond and then massage it.  To create a blend with the ratio of 2 drops of clary sage oil to a teaspoon of carrier oil like almond. You can then massage it around the abdomen area, including the hips, pelvis, and lower back. It can also be rubbed into your feet and palms.