I just hit up my wife, who owns
www.artscent.com. A while back she said she'd give a 20% discount to Alembic club members for aromatherapy grade pure lemon oil and the offer still stands. 800 551 0701. She's got several options. Ask for Dawn as her employees will probably have no idea what you are talking about.
For the more adventurous of you, there is the path that one of her clients in Boston followed. He's an upright player and commissioned an oil for his fingerboard that would interact with the heat of his hands, which activated the oils and a lovely smell would appear. Kind of aromatherapy for instrument and player synergy.
(Message edited by edwin on January 22, 2012)