Ok, so I don’t actually own the official aroma diffuser by This Works, I purchased one a while ago. But the oil is incredible. The packaging is colour coded for each department. The deep sleep range is a lilac/blue colour. Making it easy to reach for. The perfect fragrance. Amazing value for money and I’m forever recommending these products to clients, family and friends. I am never disappointed by any of the This Works products. Purchase via their website!