Tea tree oil
For a 25ml bottle of repellent: fill 90% with coconut oil. Add 5 drops of citronella, 2 drops of eucalypt and 2 drops of tea tree – voila!
The coconut oil moisterises the skin, which prevents the other oils drying your skin out. It also dilutes the strong essential oils, so that it can be spread across the skin. It has a pleasent and strong smell that repels mossies and midgies.