MiraDry definitely destroys both apocrine and eccrine glands. When humans sweat, we secrete two types of liquid. Eccrine glands produce the wetness of sweat, apocrine glands the odor of sweat. Botox injections can eliminate the wetness, but not the odor. MiraDry is the only FDA approved treatment that eliminates both the odor (apocrine) and the wetness (eccrine) components of underarm sweating.
New data from Canada is also extremely promising. This data shows that the sweat reduction with MiraDry is extremely long lasting, with results now stable 2 years after treatment (and in all likelyhood permanent). We sometimes get asked whether it is dangerous to eliminate underarm sweating, and the answer is no. Humans have sweat glands virtually all over the body, with the primary function of helping us cool ourselves. Eliminating only the underarm glands still leaves thousands and thousands of glands elsewhere to do the cooling.