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michael barry said:In what way is peppermint bad for your hair? and would drinking peppermint tea be bad for hair too?
I put peppermint oil/water at about a 1/40 or so concentration on one half of my chin for three months over a year ago. It severely reduced the beard whiskers there vs. the other side. It was a "wow" effect. However, its taken a long time to start regrowing as well as the other side. In fact, its still not come back completely.
I dont know if its upregging tnf-alpha as someone has suggested or what, but I have a feeling that something in peppermint might just be bad for hair period. We know that peppermint is an alpha five reductase inhibitor courtesy of a Japanese study (google it) in human skin, and that peppermint/spearmint teas have been shown to be somewhat effective against hirsutism in women (Turkish study on pubmed), but if it was "good" for hair, then menthol shampoos would be known hair-growth stimulants by now. They are not, why is this? JTelecom, over at another site, has noted that when he has used mentholated hairloss shampoos in the past, his hair will look worse, not better. I guess the only way to find out would be to put menthol on some non-androgenic hair (like eyebrows) for several months and see if it had a negative effect on it...............
I always thought what decreases body hair would increase scalp hair. Is eyebrow hair the same as the scalp? I've heard many woman taking spearmint tea for their hirsutism, but I've heard no reports of hair loss from their heads.
Why did you mention menthol shampoos? Do they contain mint? because from what I have seen, I find some that don't.