Set of 3 - each bottle weighs 37gEssential oils are compounds extracted from plants. The oils capture the plant's scent and essence. Unique aromatic compounds give each essential oil its characteristic essence. Essential oils are obtained through distillation (via steam and/or water) or mechanical methods, such as cold pressing.Using similar techniques, Dahlia oils have sprung up with 3 new essential oils after careful research and development to help soothe your mind and body.