Can a home water softener reverse the years of damage to pipes after it's been installed?

I want to add a water softener to my home for obvious reasons. My home is 15 years old with no softener ever being installed.

Bill2006 is correct about the pipes. However, hard water deposits WILL affect the plumbing fixtures. The deposits can clog the aerators on faucets and clog openings in shower heads, etc. Household vinegar usually disolves them. Go with your plan for the water softener and clean up all the faucets and shower heads in your home for added water flow and efficiency.

Not if the pipes are damaged due to corrosion caused by water hardness. I've actually never heard of that before, though. If the pipes are clogged due to hard water deposits, then, yes, I would think that installing a water softener would eventually allow the deposits to redissolve. Might take years, though. I've actually never heard of water being so hard that it causes problems with pipes clogging or corroding, though. Not that I would....I'm in a region of extremely soft water. No one has problems with hard water deposits here.

no the only way to clear the pipes is to install new throughout the home