Most citrus essential oils create a photo-sensitizing reaction in the skin. It is recommended that one avoid direct sunlight and tanning beds after an application of bergamot, orange, lemon, etc.. essential oils. It is for this one half of the reason that the Pomegranate Tangerine Salt Scrub is only around in late autumn and early winter. I had quite an internal struggle with the pairing of an oil with the Mango salt scrub I made last August for the first time. The Bergamot was a nice combination, but in the end I decided it was safer to go with the Geranium, which has become one of the recipes that will be repeated.
With the day's getting shorter, and what sunlight we have becoming less intense, citrus oils can be used more readily. Interestingly enough, most citrus oils have anti-depressant qualities so increased use during the winter is not only safer, but can be used to uplift mood.
My current blend for the Spa's scented massage oil is a combination of Sweet Orange, Black Pepper, Lavendar and Rosemary in a base of Grapeseed oil. This is a happy, light scent that is also great for sore muscles.