Wednesday, Nov. 4, 2026 · about a 5-minute read
Good morning. Cosmetic surgery is one of the few corners of medicine with almost no way back: once it is done, fixing it usually means another operation and another scar. Today's big one asks what it would take to change that.
The big one
Plastic Surgery May Get an Undo Button. Its Parts Are Still in the Lab. Our seventh Some Assembly Required lines up the pieces. A single shot of an old eye drug let pig skin heal with hair follicles instead of a scar, and a Danish trial is now testing it in people. Surgeons in Basel rebuilt five noses with cartilage grown from a pinch of each patient's own. And a tissue-rebuilding shot for hollow under-eyes is cleared for a 75-person trial.
Why it matters: put together, an unwanted result could be removed, the site could heal without a scar and the person's own tissue could grow back. Our odds on the whole machine: chance it works 45%, likely by 2041. Read it →
Yesterday on the site
The End of Aging
A Vaccine Against Aging Itself? Old Mice That Got One Lived 12% Longer: a shot that trains the immune system to hunt worn-out "zombie" cells stretched old mice's median lifespan by 12%.
Tired-Looking Under-Eyes Could Be Rebuilt, Not Filled. A Growth-Factor Shot Enters Testing: a healing protein approved for other uses since 1997 is cleared for a trial aimed at rebuilding under-eye hollows instead of filling them (company claim).
The End of Disease
Home-Grown Nose Cartilage Has Worked in People. Lab-Grown Ears Are Proving Trickier.: surgeons in Basel rebuilt 10 patients' noses with cartilage grown from their own cells, in two small studies.
Superhuman
Surgery Without Scars? A Drug That Let Pigs Heal Scar-Free Is Heading Into Human Tests: one shot of an approved eye drug let pig wounds grow back as normal skin, and a 12-person trial in people is recruiting.
By the numbers
12%: how much longer old mice lived at the median after the zombie-cell vaccine, in groups of about 10.
1997: the year a version of the under-eye trial's growth factor was first FDA-approved, for diabetic foot ulcers.
9 of 143: the studies on printed or lab-grown ears, in a September tally, that reported anything in humans.
New on the odds board
Yesterday's posts put fresh odds on a vaccine against zombie cells, a scar-blocking drug for surgical wounds, cartilage grown from a patient's own cells for rebuilding faces, and a shot that rebuilds hollow under-eyes. Every milestone lives on the calculator.
On the calendar
Nov. 4 to 7: the Gerontological Society of America's annual meeting in National Harbor, Md.
Nov. 5: Tesla's Cybercab opens a 12-stop display tour of Europe at Autoshow Zürich.
Nov. 7 to 8: NASA's quiet supersonic X-59 appears at the MAX POWER show at Kennedy Space Center.
No earlier than Nov. 12: SpaceX's first try at catching both Starship stages with the launch tower, per a reported air-traffic slide.
Nov. 16 to 19: the Clinical Trials on Alzheimer's Disease conference in Boston, with a cortisol pill and tau drugs reporting.
The story we're following
Rebuilding the face: in two days we've covered scars that never form, noses rebuilt from a patient's own cartilage and a shot meant to rebuild under-eye hollows. Today's Some Assembly Required puts them together into one machine.
Quote of the day
"The best way to predict the future is to invent it." — Alan Kay, computer scientist, a line he traced to a 1971 meeting at Xerox PARC and repeated in InfoWorld in 1982. Every part of today's undo button exists because someone stopped predicting and started building.
Coming up
Today, more on rebuilding the body: an old diabetes drug that helps transplanted fat survive at 10 a.m., a breast implant built to dissolve at 1 p.m. and printed tissue repairing injured pigs at 4 p.m. At noon: what the election means for data centers, power bills and the AI race. Also: a gene editor aimed at the root of one form of ALS at 11 a.m. and a year sealed inside fake Mars at 5 p.m. Thursday's big one: The Plastic Surgeon's Office Is Being Reassembled, our next Some Assembly Required.
Until next time
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