Humm, I can’t tell you much without seeing the version of the EO you purchased, Valerie, but one reason why they could have said that is that the EO you bought is a cold-pressed orange EO which can cause photosensitivity after sun exposure. Cold-pressed citrus oils are known to do that, as well as a few others. Here’s a great post on this topic. What you can do is use it for flavoring things, cleaning, diffusing, or in your skin care products during the winter months when you won’t get as much sun exposure and purchase a steam-distilled orange EO to use during the summer months. Hope this helps!