I recommend Nioxin (I am a cosmetology student due to graduate in a few months).
Suzie
I recommended it, also. It stopped mine and got it to coming back in. Absolutely love it.
Dac
Ooops... let me clarify: my hairloss started AFTER my TT in May of '07, so maybe it would have even been worse had I not already been using Nioxin? Who knows.
nioxin is what has been recommended a lot on this board. I have used Nioxin for the last 2 years (my MIL is a beautician and I haven't bought my own shampoo in 10 years b/c she always sends me the huge bottles) and I can't say that it's done anything to help my hairloss.
I like the" Pantene" brand labeled for hair strengthening. Now that my hair is mostly normal again I use "Pantene" classic clean formula.
Time and a hat are your best friends until your hair get back to "normal". I used numerous shampoos and conditioners and did not find any the was truly outstanding. My hair dresser recommended Biolage Hydrating Shampoo and Conditioner. I've been using that for about 4 months now. I also use the Biolage leave-in conditioner. I also use a oil treatment every time before I blow dry that proved thermal protection by Bill Friede.
It's been 7 months since my RAI and my hair looks fairly healthy considering how dry and brittle it became, but it still hasn't reached normal. Before RAI if I skipped a day washing my hair, it became very oily. My hair is never oily now. It also grew back in curlier, which I like that part of it!