I can't speak for much of Years Younger beyond my experience with getting eyelash extensions done…read morethere!
I booked an appointment during a sale they were running for $50 eyelash extensions! Heck of a deal, right? So, I went, and because I have SO many eyelashes, the appointment lasted almost 3 hours, which I was fine with, I knew it would be a time-consuming process. However, after I left my appointment, I went straight to work(and I'm just a hostess, so I normally just stand around). I stopped at my home long enough to literally just change my shoes, and then jetted out the door! I didn't touch my face, didn't change clothes, nada. So there was nothing I had done that could have affected the lashes. At the end of my shift, I noticed that at least a THIRD of my extensions on BOTH outer(and inner with one eye) were already completely gone. Bummer. So, I contacted the technician, and she offered to fix them for free, yay! Went back for another time-consuming appointment. Loved them.
A week later, the extensions were almost completely gone. Mind you, I do literally nothing with my face for skin care. I wasn't using oil-based makeup remover or face wash, I don't wear mascara at all(hence wanting the extensions), didn't wet them before 24 hours(both times I actually waited more like 48), I don't have a rigorous job, I don't touch my face excessively--I literally can't think of anything in my routine that would have ruined the extensions so quickly.
Contacted the tech again, and she offered to fix them, again at no charge, one last time, only she would use a new glue! We schedule the appointment for early one morning. Not that it's totally relevant, but I live 30 minutes away from the spa, so it wasn't exactly a hop, skip, and boat ride away.
I get to the spa for my appointment, and my tech wasn't there. She forgot about our appointment. I told her via the receptionist(they were on the phone) no worries, we could reschedule it. She never got back with me to reschedule. I reached out a couple weeks later, and eventually the conversation ended, yet again, with me giving my availability and getting no response. I tipped her nicely the first time she did my lashes and would have continued to tip her whether she charged me or not.
I'm really just not happy with the customer service I received from my tech, and I'm bummed with the quality of eyelash extensions I received. She seemed very nice as a person, but the lack of professionalism in some areas left more to be desired.
On the other hand, what I saw of the facility was nice, upscale, and classy! All the employees I interacted with were friendly as well.