Varicose veins are caused by faulty valves, or structural abnormalities of the blood vessels failing to effectively circulate blood from the legs to the heart. According to the Australian Vein Institute, there are various essentials oils that can be useful in helping to reduce swelling and ease pain. Here are some of the top ones. Rosemary and Cypress oils can stimulate blood circulation and encourage blood flow, helping to reduce swelling and heaviness. Geranium oil is also an oil known for its use with circulation and skin conditions. Lavender and Frankincense oils can be of benefit with their anti-inflammatory and pain relieving properties, and there are a number of other Phlebotonic essential oils which could also be included, such as Neroli, Lemon, Grapefruit, Tea Tree, Niaouli, Spikenard and Patchouli. Add your oils to carrier oil and apply gently to the leg just above the affected vein. Avoid massaging or applying to the vein directly as it could cause further vein damage or possible blood clot release, risking pulmonary embolism.