I used to use Ivory liquid soap for all my birds, its gentle on the birds, and the feathers, and it smells nice too. But now, I use flea shampoo for kittens. It smells just as nice, gets them just as clean, and it will also kill any mites and parasites they may have on them somewhere. The exact one I use, you let stay on the bird for 5 minutes before rinsing, and during that time I like to make sure the entire bird is lathered up nicely, running my fingers through the feathers and such. I thoroughly make sure the bird is rinsed, and then wrap them in a towel, and begin to blow dry the head, feet, and wings. I blow dry them on low until they are almost dry and then let them finish drying on wire. I dont use bluing, tried it once and ended up with a blue spotted bird, lol. But, you can use a small amount of bleach in the water, and have known of people using peroxide to whiten the feathers(ive never tried this, been afraid that it would damage the feathers), but if you use either make sure they birds feathers are rinsed very well before you start to dry them. A frizzle will not look its best until it is clean. Frizzled birds arent any harder to keep or raise than any other bird, but when showing them bathing is almost a requirement to get your bird to look its best.
~Casey