This is your one-stop shop for many beauty care items. I frequent this place for mostly one thing. And that is their selection on falsies/fake eyelashes.
The name says it all. Sally Beauty Supply is basically known for housing your beauty needs such as shampoo/conditioner, hair accessories, nail polish, lashes, make-up, and many more.
If you become a "beauty member", you'll get a small discount on certain items. The items it applies to will say it on the price tags all around the store and it shows the price comparison as well.
You will eventually have to renew your membership once it expires, but I'm not sure how quickly it does. Although, there's a fee for the renewal, it'll be worth it if you frequent the shop quite often.
There are several locations throughout Vegas. I've came to this location several times and there was never a problem with finding anything. I don't remember the name of one of the sales associates in particular, but she's always been helpful.
The only thing that sucks is they don't always have the falsies I want in stock. However, I call the store in advance if I find something on their website, just to make sure it's there. A sales associate will even put it on hold for you. :] Just let them know when you'll be there. Cool!