I don't know about spearmint tea, but I've drank spearmint tea for years before bed to help relax me because I have problems sleeping. I don't know if it minimizes unwanted hair, but I have no facial hair, the hair on my arms, legs, and underarms is blonde. Also plucking the hair, waxing or using an epilator will over time make the hair thinner than make it not grow back at all. My aunt use to wax her legs everytime she could and after 6 years her hair does not grow there anymore, her legs are completely permanently smooth. Her hair use to be brown on her legs she said after a year or so they became blonde. So yea, I'd definitely say try those things. I sometimes wax btw.