How do I properly dilute this spruce essential oil to use it in a body oil or massage blend?

This is a concentrated essential oil and must be diluted with a suitable carrier oil before applying it to larger areas of skin. Common carrier oils include almond, jojoba, or fractionated coconut oil. A typical dilution for a body or massage oil is around 1-2%, which translates to approximately 1-2 drops of essential oil per teaspoon (5 ml) of carrier oil. You should first mix a small amount, perhaps one teaspoon's worth, to test for skin sensitivity on a small patch like your inner arm. The 'How it works' content notes that in diluted use, the volatile compounds create a refreshing, clarifying sensory effect and are appreciated for helping the skin feel toned and refreshed. Always avoid applying the pure oil directly to the skin, keep it away from your eyes, and store your final blend in a dark glass bottle to protect it from light.