Spending money on expensive skincare products is a waste for anyone under 35.
The only quality skincare product you need is sunscreen. I recommend La Roche Posay. If you live in a cold climate, you may need a good moisturizer for winter. The best body moisturizer is Palmer’s Cocoa Butter, and the best moisturizers for winter skin are NV Perricone (any product), and Dr. Jart’s Ceramide cream.