The treatment: Neutrogena Rapid Tone Repair moisturizer ($21)
What it does: Retinol, one of the most potent anti-aging ingredients around, is paired with vitamin C, a strong antioxidant. Along with hyaluronic acid, which hydrates skin, these actives are among those proven to actually change skin over time.
In plain English: These ingredients won't work magic overnight, but with consistent use, you'll see a smoother and more even-toned complexion.
Try it if: You're beginning to see dark spots and dull skin. One caveat: this is a highly fragranced lotion, so those with sensitive sniffers may want to pass.