Our Hangover Relief Roll On proprietary synergy blend is a powerful combination of basil, carrot seed, cinnamon, lavender, lemon and peppermint pure essential oils pre-diluted to 5% in Jojoba oil. Simply uncap and roll on to the base of the neck or temples and this blend works fast to relieve headache pain, nausea and tension. Each bottle is handmade with love in Connecticut, USA in small batches to ensure freshness and strength.