Hello! I remember when I began studying to make soap that Peppermint was something to be careful with. There was a humorous article in a soapmaking journal about a soapmaker who loved to make highly scented soap. She had made a batch of peppermint soap and she and her husband decided to try it out together in the shower. It was fun for a little while but the sensitivity went nuclear and they were fighting over water to get rid of it. Lesson learned FAST.
I use peppermint EO at the low end of the percentage spectrum but also combine it with a little Sinus Relief EO (contains a blend of eucalyptus, camphor and mint) and some pine FO. Surprisingly, the peppermint is 'maginified' but does not have any tingling.
Although we tend to fear making and selling tingly peppermint soap I saw one soapmaker at a holiday craft fair, before Thanksgiving, selling her holiday version of it. In fact, she had two versions: one called "Tingle Bells" colored green and had (maybe) silver mica embedded within it and the other was called "Tingle-all-the-way!" which was red and white striped - like a candy cane. She bragged that her soap bar labels were deemed border-line "por**graphic" by the craft fair organizers which made her giggly audience even more interested. The 'Tingle Bells' pictured silver bells with overly big clappers and the "Tingle-all-the-way" soap had a modified Leonardo da Vinci's 'Vitruvian Man' in a Santa's hat with a surprised look on his face. She told her audience that her peppermint soap was sure to - quote - "get their men in the holiday spirit". My first thought (after my horrified imagination settled down) was "or get them into the ER and later into divorce court." I overheard one young lady next to me tell her friend she was going to buy a bar for her fiancee and I flat-out told her not to do it. I explained my carefully worded "being a male" reasons. She thanked me repeatedly for the warning. The things people do and make...... :shock: