I have two badger brushes and a third I got for the son, I do not recall any yellow water when they soaked the first time. I also have a cheap, boar bristle bristle I think, brush I got at a Pharmacy. I do not recall yellow water from it either. You could drop the manufacturer an email and ask if your experience is normal.
[B]Razor[/B]-Nickel Deluxe Bull Mastiff-Goodwill New Long Comb, Nickle Bull Mastiff Mark 2-New Long Comb, Gillette New Short Comb, Gillette Sheraton Open Comb TTO
[B]Brush[/B]-PenWorks, finest badger, 24 mm Horn, Simpson's Wee Scot, Best Badger, 14 mm
[B]Soap/Cream[/B]-Kiss My Face (Mint & Lime), Speick Shave Cream, SCS Very V Cream
[B]Aftershave[/B]-Proraso Liquid Cream Aftershave, Speick Aftershave
[B]Scuttle[/B] - Moss Ivory Small/Regular, for face lathering