Charmed - Season 2 Episode 17 -

Three old ladies summon the demon of vanity Kryto and promise to resurrect him, exchanging for health, beauty and youth for the senior trio. Kryto makes a further demand of magical powers, and one of the ladies, Aunt Gail, offers the abilities of the charmed ones. Aunt Gail visits the Halliwell sisters, steals one spell from the Book of Shadows to transfer the powers of witches and betrayals the naive sisters. Piper finally tells Dan her choice for Leo.