Shaven reminds me of this burned into my eyeballs memory: I was looking around in a porn shop in Manhattan. There was a series of books / mags by Puritan, a major Euro publisher. The mags were around 6" x 9" or so; glossy, high quality photos. The story line was:  
Attractive brunette with two Great Danes (dogs, not men).  
A couple of men enter the scene.  
Some sex.
They shave her head! She is kneeling, dogs close by. Foamy shaving cream. Safety razors. It looked absolutely like real hair coming off (not a pre-shaved head and special effects shaving). The dogs were oblivious.
When all of the other stuff is said and done, they finish on her shaved head.  That is, two big white streams of cum on her shaved head. Dogs still oblivious.  
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That's something I think of when I hear the mention of shaven heads.
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No, I didn't buy the magazine. I didn't need to!

I'll start with the absolute best, can't tell them from the real thing, hair extensions: In this case, who cares! They're as good as real!  Reviewer will say, "I loved running my fingers thru her long, beautiful hair."  
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Next up: the frizzy, brittle, do not even feel like hair, discount, economy hair extensions: Reviewers will surely say something about, "Her hair felt like overcooked pasta." or "... a piece of carpet."  
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And the third REALLY important category for hair, IMO, is whether or not she will even let you touch it. That will almost ALWAYS come up in reviews. "I reached out to touch her hair, she slapped my hand away and shouted, "DON'T TOUCH MY HAIR!""  And that's a written review comment that can happen with real hair or with extensions.  
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To specify "extensions Yes-No" in the Profile could paint the great, realistic ones with the cheap-o, "don't touch my hair!" ones.
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For that reason, I'm against it. BUT I STILL THINK THAT A HAIR COLOR CHART MAKES ALL OF YOUR SUGGESTIONS FOR MORE ADJECTIVES UNNECESSARY! (Including pink and green!)