On Natural Arousal Oil is unlike anything else available with its blend of natural oils to produce a naturally arousing effect. Simply apply a drop or two of the On Natural Arousal Oil onto your finger, or indeed your partners and gently rub it onto the clitoris. You will then begin to feel a warming effect and tingle that will help you to naturally lubricate during play time. Although you can sometimes feel the effect in seconds, it can actually last up to 45 minutes.