I usually purchase 100% tea tree oil for £3-£10 from Superdrug and The body shop. I went home bargains and in the kids section, next to it was the medication. They had a large bottle of 100% tea tree oil for 83p. Savers were seeling the same oil for £3 something. Its my first post so bear with me. Grab yourself a bargain. This is great for spots and acne for teenagers like me.