I've made my mind up and definitely want it after researching it today but it's just a question of when!
There's an American esthetician youtuber called Cassandra Binkson, she's very full on but also open and honest about what she doesn't like, she did a video about the Reduit (not the Uni but one specifically for skin) and the device
@Aude mentioned and likes them both. I can't justify the expensive one but I think the Uni is a lot easier to justify
Although now that I think of it I'm pretty sure she said she used a hair treatment and liked how it made her curls look. I skim watched it as I generally have no patience with youtube videos