1. The fix for saggingUlthera (in-office only) uses ultrasound to stimulate collagen, which keeps skin taut but decreases with age (cost: $2,500). A cheaper choice: Bliss Thinny Thin Chin Neck Cream ($48; blissworld.com). Pullulan (a sugar) tightens, while algae extract boosts collagen.
  2. The fix for horizontal linesSun exposure and years of repetitive motions, such as nodding, form creases. Use a cream that has hyaluronic acid, which traps water in the skin, plumping it up and reducing wrinkles. Try Mario Badescu Vitamin A-D-E Neck Cream ($18; mariobadescu.com).
  3. The fix for ropinessThe platysma muscle, which extends from chin to chest, protrudes as it weakens, forming ropelike vertical bands. Even the best cream won’t erase them, but “Botox [$150 and up] relaxes the muscle for a less corded look, and fillers [$600 and up] plump the skin so the muscle is less visible,” says Dr. Gilbert. More from Prevention: The Gorgeous Way To Gray