A. The answer is that any shampoo can mitigate build up. Build up is a term that's been defined and redefined by the Internet and I think people are really just saying "how do I keep my hair from getting really dirty?". Answer = Wash it with shampoo!
To give you a little more insight, my worst hair setback was caused by an organic shampoo targeted to naturals.. It is "sulfate-free" and only uses a very mild surfactant, Decyl Glucoside. The problem was that it was not pH balanced and my hair got totally stripped. Clean, clean, clean...no cones left on the strand whatsoever. And you know what? My hair looked Awful. Fly aways, feather-light, completely uncontrollable. I suddenly realized how much progress my hair had made because after one week with that shampoo, all of the progress was literally washed away.
Also, we don't want to remove all of the silicones, most silicones (amodimethicone for example) are attracted to the damaged areas of the strand (like two magnets). If it doesn't come off with shampoo, that's because the damaged area won't let it go. It is the closest thing we can get to permanent repair.
For more information on 'gentle' surfacants, see THIS ARTICLE.
Q. Which shampoos do you recommend? Nikki likes Elucence Moisture Benefits Shampoo,
CURLS Curlicious Curls Cleansing Cream, and Giovanni.
A. Those are all good. The Giovanni shampoos are all pretty similar, but Smooth as Silk looks like one of the better options there.
A. Yes, you can re-moisturize after using a silicone. The water may absorb more slowly if you've used a serum, but it will still absorb, just moisturize as usual and let it be. With regard to silicone in conditioner, re-moisturizing is not affected at all. People co-wash with Herbal Essences all the time and don't worry about the silicones in that affecting their moisturizing routines. Silicones are not extra thick (serums are usually lighter than castor oil) and they are not glue-like. Most of the time you can't feel them on the hair at all, and if you do, it translates as softness.
In the meantime, check out her site Hair Liberty for more information!