Exfoliation is one of the easiest things you can do for instantly younger-looking skin in your 40s. You should definitely be using a skin-care product with alpha hydroxy acid -- which gently turns over dead, dull skin -- but you can get even better results by seeing a professional.

Every one to three months, visit a licensed aesthetician or dermatologist for microdermabrasion or a light chemical peel, which can dramatically improve skin tone and texture in under an hour. You can also ask about dermaplaning, a deep exfoliation treatment that uses a sterile blade to lightly scrape your skin, painlessly ridding your face of dead skin cells and fuzzy baby hairs.