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DHT After a Hair Transplant: Why Protecting Your Existing Hair Matters as Much as Replacing What's Gone

A transplant gives back the hair you lost, but DHT keeps thinning the hair you still have. Here's why blocking DHT — ideally before surgery — is what keeps a result looking full and natural for years.

Vegas Hair Transplants · June 26, 2026

One of the most common things I hear, usually a year or two after a great procedure, is some version of: “My transplant looks fine, but my hair seems thinner overall. What happened?”

Almost every time, the answer is the same — and it’s the one thing nobody warned them about. So let me warn you now, because understanding this is the difference between a result that holds and one that quietly fades.

Transplanted hair is permanent. The rest of your hair isn’t — yet.

When Dr. Khorsandi performs a transplant, the grafts come from the back and sides of your head — your donor area. That hair is naturally resistant to DHT (dihydrotestosterone), the hormone that drives pattern hair loss. That resistance is the whole reason a transplant works: those follicles keep growing for life, even after we move them to the top of your head.

Here’s the catch. The hair you were born with on top — your native hair — doesn’t have that resistance. If you have pattern hair loss, DHT is still working on those follicles, shrinking them a little more every year. The transplant doesn’t change that. It can’t.

What that looks like a couple of years later

Picture two guys who had the same procedure on the same day.

The first one blocks DHT. His transplanted hair grows in, his native hair holds steady, and the whole head looks thick and even. People just think he has good hair.

The second one does nothing. His transplanted hair grows in perfectly too — but his native hair keeps thinning around it. Eventually there’s a visible difference between the dense transplanted zone and the thinning hair next to it. The grafts didn’t fail. The hair beside them did. And now he’s thinking about a second procedure he might not have needed.

That’s the part people miss. A transplant replaces what you lost. It does not protect what you still have.

The fix: replace what’s gone, protect what’s left

Getting the thickest, most natural result is two jobs, not one:

  1. Replace what you lost — that’s the transplant, moving DHT-resistant hair into the areas that thinned out.
  2. Protect what you still have — that’s blocking DHT, so your native hair stops miniaturizing.

Do both, and the result stays full and natural for the long haul. Do only the first, and you’re rebuilding while the foundation keeps eroding.

The best time to start is before surgery

If there’s one thing I’d push on, it’s this: the ideal time to start protecting your hair isn’t after the transplant — it’s before it, or right around it. Every month you’re blocking DHT is a month your native hair is holding its ground instead of slipping. Start early and you’re protecting the investment from day one.

A word on how to actually do it

Blocking DHT is medical treatment, so it’s worth doing properly — with a licensed provider who reviews your health history, and a conversation with your own doctor if you have one. These days there are simple, telemedicine-based ways to get on a solution without a lot of hassle.

This is exactly why we put together a page on it. We walk through how patients protect their result — including LockLab, a once-daily option from people we know and trust. See how to protect your result →

Bottom line

Your transplanted hair will last. Your native hair needs you to defend it. If you’re even thinking about a transplant — or you’ve already had one — get on a DHT solution sooner rather than later.

And if you want a straight read on your own situation, that’s what we’re here for. Text me at (702) 994-2133 or request a free consultation, and Dr. Khorsandi will tell you honestly what he’s seeing and what your real options are.

Have a question about your own hair?

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Reading is a good start, but every head is different. Send me your details or a quick photo, and Dr. Khorsandi will tell you what he's seeing and what your real options are. You talk straight to me, start to finish.

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