a few articles like this http://docdro.id/pbqLapp
show that wounding/microneedling alone is effective, although it can be inferred that for aggressive Androgenetic Alopecia it will have minimal effect.
image "group 2" = microneedling alone after 24 weeks.
that thing doesn't even appear to have needles at all. the article was very clear in describing the synergistic properties of wounding (needles) and RF combined together.