As someone who takes home fragrance seriously, I’ve always got a diffuser on the go. Diffusers come in all shapes and sizes (no really, I’ve even tested one that looks like a disco ball), but they generally fall into two categories: reed and electric. Reed diffusers use rattan or bamboo sticks to absorb fragrance oil from a bottle and gradually release the scent into the room. You’ll want to flip the sticks every week or so to keep the scent going strong. Meanwhile, electric diffusers gently heat a blend of water and oil, releasing it into the air as a fine mist.Then there are nebulising diffusers, which use an atomiser to disperse fine particles of essential oils, creating a stronger, waterless fragrance. Some use perfume-style scents, while others rely on pure essential oils like lavender, lemon, and sandalwood, which can influence mood and help you relax or focus.In a bid to find some of the best on the market, I put a range of different diffusers to the test. When it came to rating them, I did factor in my own preferences, but I also paid attention to objective testing criteria, such as potency, and how long the fragrance lingered in a room. My favourite of the lot is the M&S apothecary restore reed diffuser – it’s spa-like and not overpowering. Below, you can read all about my other tried and tested top picks. Read more: Best bath towels 2026, tried and testedMy home has never smelt so good (Siobhan Grogan/The Independent)The best oil diffusers for 2026 are: Best overall – M&S apothecary restore diffuser: £17, Ocado.comBest budget buy – Matalan orchid and vanilla elegance diffuser: £12.50, Matalan.co.ukBest electric design – Espa aromatic essential oil diffuser: £90, Espaskincare.comBest for looks – Diptyque home fragrance diffuser: £75, Diptyqueparis.comBest luxury buy – Jo Malone London pomegranate noir diffuser: £74, Jomalone.co.ukBest long-lasting diffuser – Rituals private collection royal tea fragrance sticks: £58, Rituals.comRead more: Best silk bedding, tested by an interiors editor