Viscose colors to be used in combination with H Dupont Silk Colors for silk/rayon blends. Alter Ego Dyes are tailored specifically for dyeing patterned Silk/Rayon blends, like Devore Satin where the backing is silk and the pattern overlay is rayon, or Silk Velvet where the pile is rayon and the backing is silk. Alter Ego dyes provide colors that will dye only the rayon fibers. Use H Dupont French Silk Dyes to dye only the silk fibers. You choose one of each type of dye and pour them both into the dye bath together with your fabric or scarf, add vinegar, salt and fixative, simmer them in a pot on the stove for 30 minutes and SHAZAM! You get a beautifully dyed pattern in the two colors you chose. The Alter Ego Dye only fully dyes the rayon fibers and will leave a lighter shade on the silk if you don't also use a H Dupont French Silk Dye for the silk fibers. Absolutely fabulous results, and so easy to use even a blind-folded crazy man in a straight jacket could do it! If you like cut silk/rayon velvet or devore satin goods, in any form, you have to try these dyes! The results are fantastic, and they are so easy to use you will love them. Please note: H Dupont, the manufacturer of the Alter Ego Dyes, decided to discontinue the Alter Ego Silk Colors. Their reasoning is that the formula of the Alter Ego Silk Dyes is the same as their H Dupont French Silk Dyes, which have a much larger color selection. Dupont has done extensive testing and claims that all 80 H Dupont French Silk Colors will work in place of the Alter Ego Silk colors. You can see the full line of H Dupont French Silk Dyes here. The manufacturer recommends the following H Dupont French Silk Dyes as replacements: Genet #51 use Jeune Primaire #717 Physalis #52 use Cuivre #773 Zinnia #53 use Muira #409 Capucine #54 use Coquelicot #427 Ecorce #55 use Loutre #803 Ardoise #56 use Vieux Blue #209 Turquoise #57 use Cyan #221 Santoline #58 use Vert Nil #618 Reglisse #60 use Noir #100 Chardon #59 is discontinued NOTE: The salt and vinegar in the kit can be replaced with regular table salt and white vinegar if necessary. However, the Alter Ego Dye Fixative IS required. It cannot be replaced with Soda Ash or Dharma Dye Fixative.