Choosing Beauty Products with Jcpenney Coupon Codes

When it comes to beauty products, do you splurge on expensive products, believing that they have better quality? Or are there products where you buy the only the best and some items where you think price doesn't really mean anything so you take the cheapest? Or do you go for brands, and buy stuff from the same maker out of loyalty or perhaps just for uniformity?
Over the years, I've followed all of the above schools of thoughts, and then just dropped them as quickly. Looking at my recent purchases, there's just no hard and fast rule. I've decided to stick to a facial moisturizer I've been using for some time now because I find that it works and feels good on my skin. Although it's not cheap, price wasn't a factor in my choice. When it comes to nail polishes, hair products and makeup, though, I would say I buy stuff from different price ranges. I wouldn't think twice of using Jcpenney coupon codes to get the latest hues, regardless of brands. A $10 nail polish probably won't chip and would remain shiny on my nails much longer, but if I see a cheap one with a nice hue, I'd definitely buy it, too. So while I agree that price may indicate quality, it doesn't affect my buying tendencies.
What about you? How do you choose your beauty products?