Relax A Cat Spray is a water based product called a hydrosol, there are no essential oils added. We blend Lavender & Orange Blossom hydrosols together to help calm anxious or stressed out cats. Both of these hydrosols are known to be helpful to cats emotionally and physically when they are not having an easy time in general. You can spray the room or spray your hand and then pet your cat. It is well known that cats should not have essential oils put directly onto their coats because they are not able to break down the essential oils when they are cleaning themselves. Essential oils are fine to diffuse for most cats. Available in 30 ml spray.