There's a lot of misinformation out there regarding citrus essential oils. Cold-expressed citrus essential oils can be sun-sensitizing due to the content of bergapten in the essential oil. Bergapten itself is too large to pass through steam distillation though, making steam-distilled citrus essential oils not of concern, particularly in the extremely low concentrations used in skin care products, usually around the 0.01 - 0.1% range. Mad Hippie only uses steam-distilled or bergapten-free essential oils in our products.