Peppermint oil can be used to cool your body in the heat by applying it to your neck, wrists or feet, clear head congestion and sinus pressure, relieve a headache improve concentration, boost your mood and reduce fatigue, help with digestion, relieve heartburn and nausea.► Karma Organic peppermint essential oil has analgesic, anti-inflammatory, and anti-spasmodic properties, it not only can relieve pain and inflammation but can also calm the spasms that cause muscle cramps. ► Peppermint can balance the pH level of the skin and it also controls the excessive oil on the skin. It reduces acne, blackheads, redness of the skin and the rashes on the skin. ► Peppermint can balance the pH level of the skin and it also controls the excessive oil on the skin. It reduces acne, blackheads, redness of the skin and the rashes on the skin.