I've read numerous studies about that subject as well (i.e., peppermint tea resulting in reduced body hair), and HUGE DISCLAIMER here: I am not
a doctor or health care expert, LOL. However, the common denominators among those studies were: 1) the test subjects were all female) and 2) the "hair reduction properties" of the tea were based on internal consumption.
Supposedly, peppermint tea can attach to androgens in the body which lead to excessive body hair in women, and expel them naturally, with no side effects. The studies were of particular interest to women with thyroid disorders or PCOS, because they often suffer excessive facial and/or body hair, and usually have to resort to harmful removal methods.
It seems like you're interested in topical
use-- not internal consumption. I believe you wouldn't experience anything harmful from a peppermint tea rinse, with the exception of a little tingle
. And remember, the women in the study drank five cups or more every day
in order to reap the "benefits" of reduced body hair. I use a green tea that's blended with peppermint in order to do my tea rinses, and I never noticed any adverse affects. HTH.