Are department store skin care products really better than grocery store?

I am starting a skin care routine and was wondering if I really need to shell out the money for brands such as Lancome, Clinique and Origins, or if Oil of Olay will provide me with the same results. I am looking for products that help even skin tone and give you a "glow", and also for under eye circles and nipping eye wrinkles in the bud. I am 22 and have normal skin. Thanks!!

If I am 20, when should I start using anti-aging products?

I hardly ever go out into the sun. My biggest skin problems are under-eye circles and old acne marks from when I used to have pimples a lot. However, I hear that you should prevent wrinkles with retinol at a young age. How young?