AR4/http://www.wenn.com/
AR4/http://www.wenn.com/

"Seinfeld" star Jason Alexander has confessed the real reason for his remarkable baldness reversal: He's wearing a wig.

The actor sparked rumors he'd undergone treatment to replenish his thinning locks when he was snapped sporting a full head of hair earlier this week and told fans he was "experimenting with some interesting hair systems."

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But now he's admitted the truth behind his new tresses -- he's wearing a toupee.

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In a post on Twitter.com, he writes, "The way my hair has receded in the last two years was best defined as dorky. I started balding at age 17 and after first being sad, I really embraced it. I was always cast older than my actual age which generally meant better roles ...

"There was a practical element -- onstage and even to a degree on film, my head had become a big beacon, reflecting light in a very obvious and distracting way.

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"My wife and I discussed it and came up with 3 options - do nothing and accept it; shave my head (but I thought that might limit my castability even more) or put some hair back. I thought about grafts or implants but frankly didn't trust the results would be good enough and also wanted to retain the option of playing truly bald characters. So I began looking for a hair system.

"What you see on my head is a really good, semi-permanent hairpiece. By semi-permanent I mean that I can wear it constantly for weeks at a time, if I so choose. I can swim, shower, work out -- whatever. It stays on... The reason it looks thin is that I challenged my designer to make me a piece that would look very similar to the way I did 10 years ago. So, it looks like a guy who is losing his hair and isn't an artificial mop of hair that I never had ... It's honestly no big deal for me and hope it's not for you either."