As far as buying beauty stuff goes, I actually didn't do too badly in December. I'll go ahead and fess up about what I did buy, though!
I had a gift card to Dillard's, so after Christmas I purchased the Enchanted Wonderstruck and Wonderstruck gift sets. They were both 50% off, so I ended up only paying about $40 total for both of them. I also ordered two bottles of Snow Angel from Philosophy, so I am pretty well stocked on body wash for awhile.
There's absolutely nothing that I need at this point, but after reflecting on my purchasing this past year, I've realized its inevitable that I'll end up buying something, so I've resolved to be smart about it. I'm going to go for very low, minimal spending on beauty products this next year, and checking out the less expensive drugstore items first. I also really need to take time to think about something and whether or not I'll use it as much as I'd like before I buy it. This past year, I bought several items that have just kind of sat around because they're really not my style at all (hello, MAC lipstick in Morange!). The goal is to get rid of that impulsive spending that leads to me buying stuff like that.
But for January...I'm gonna need to do a strict no-buy for this month. We spent a lot of money on gifts, travel, doing fun stuff, and eating out during November and December, so our finances took a hard hit. The only item that is a definite must for a repurchase this month is my special Aveeno eczema lotion for my hands. Other than that, I think I have multiples that can replace items. Oh, and this month, I want to keep track of my empties. I think it kinda helps you feel like you're making big progress, ya know?