*Citrus oils can cause photosensitivity so we don’t recommend using them if you plan on being in direct sunlight after topical application. The personal care products that doTERRA produces such as the doTERRA Salon Essentials®, lotions, etc. are a little different. The shampoo and cleansers are wash off products so there is no concern there, as well as the products that stay on such as the lip balm and lotion are found in a small, appropriate amounts that will not cause any phototoxic harm. Because we work closely with experts in formulations, we are able to provide a safe formulation. Essential oils at full strength on their own are very potent and is why they carry the photosensitivity warning.