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Experience and performance will vary by individual because we all have different body chemistry, but this arousal oil worked fairly well for me. All you do is rub a drop or two on your (or your partner's) clitoris, and it may take up to two minutes to start working. It's supposed to last for 45 minutes, and while I could feel it start working within a minute or so after applying it, for me the warm tingling wore off after about 25-30 minutes. But that's okay because by then I'm most likely engaged in other activities that maintain/build my arousal.

On 4 Her isn't enough to make me climax without additional stimulation, but I don't think it's supposed to. The warming sensation does make my clitoris go all tingly, which increases my arousal, and that's what it's meant to do. I haven't been counting the number of drops I've used so far, but according to the product information this tiny .17 oz bottle contains around 50 applications. Those with sensitive skin will probably want to do a patch test first.

I still use this every once in a while. It's great for times when I know my partner is in the mood, but I'm maybe not so keen, and I think it does help. It certainly tingles and wakes up my clitoris, but I honestly don't know if it does all that much to make my orgasms stronger.