Do you want to maintain your skin condition just like your teenage or twenty-ish? If you leave this planet and spend years in space, it is literally possible.
Time is like an arrow, it never backs to the past, but it can be slowly or rapidly depending on the moving speed. We already know that travelling very fast will result in time dilation, so we know it’s possible to travel into the future just by travelling very fast. If you spent a year in space then back to earth, you would be 0.007 seconds future earth.
If technology can make us spend longer than one year out of the earth, we can delay our ageing-system on earth and can be younger, rather than staying on earth.
Could you refer the below picture?
there are twins astronauts, Scott Kelly(right) and Mark Kelly(left). Scott spent a nearly a year in space, ISS(International Space Station) for NASA mission, after back on earth, he has a difference on physical to molecule level with his biological twin Mark, but Scott looks much younger than his earth-bound brother, doesn’t he?
Your understanding is yours, but this is on the general or specific relativity theory, Einstein’s.
See you in next topics,