Halcyon Reed Diffusers from Blue & Bear are scented with Frankincense Serrata, Geranium, and Indonesian Patchouli essential oils that together embody serenity, balance, and grounding. Each 100g Diffuser is hand-blended in our Cotswolds workshop from natural grapeseed oil. Frankincense Serrata Essential Oil has a distinctly luxurious aroma: smooth, velvety and exquisite. Commonly used for its brightening, immune-boosting effects, and helping to promote health and positivity. Geranium Boubon Essential Oil is a floral and fragrant oil, popular for soothing the mind and restoring the body.. Indonesian Patchouli Essential Oil is a fragrant, calming scent known for its cleansing and soothing properties as well as its regenerative abilities Halcyon create a sophisticated, grounding fragrance that evokes feelings of peace and inner calm.