The On Natural Arousal Oil for Her is best when used alone. or with others. A couple drops in the morning. and you'll be thinking about tonight all day. Menthol-free. Over 50 applications. Made with natural ingredients. No artificial dyes. perfumes. or harsh preservatives. Made in the USA. This pack of 12 is designed to refill the ON Natural Arousal Oil for Her Display or it can be shown on its own.