Many people these days have skin sensitivities, even to the purest natural ingredients. A simple patch test will help identify if you have any allergies or intolerance to a product before beginning use.
On the skin of the inner arm (where the elbow folds, apply a small amount of the product. Leave for a few hours or overnight. If you experience no reaction then it should be safe to use. However, if there is any redness, irritation swelling, itching or burning, do not use it.