Because citrus essential oils are created from peels, they contain lower levels of Vitamin C than citrus fruits or juices. However, Vitamin C and other antioxidants are still present in citrus oil. Additionally, research suggests that citrus oils like Lemon may help improve your body’s ability to absorb Vitamin C and other nutrients from food. If you’re looking to boost your immune system with Vitamin C, add citrus oils to your daily routine!