This Works is the brainchild of Kathy Phillips, former Health & Beauty Director of Vogue magazine and Geraldine Howard & Sue Beechey of Aromatherapy Associates. The Bath and Body Oils and Burning Essences are formulated using 100% natural plant oils. No compromises are made in the choice - or cost - of the highest calibre raw materials and the sourcing of plants. Just as wines have good and bad years so do plant crops, and the active properties of what is ultimately chosen for ThisWorks products is carefully monitored for purity & quality. ThisWorks Bath Oils are 100% preservative free & hand-blended at a 30% concentration - a level unheard of in standard retail products of this kind.