Synthropol is for hand dyes and Retayne is for commercially dyed fabrics. Kona would need retayne. I have used Robt. Kaufman Kona many times with no bleeding. Kona is a generic term and there are several mfg. that make kona.

I thought the "real/authentic" Kona cotton was available only through Kaufman?

Unlike "muslin" which comes in many weights and qualities and is available through several lines.

Okay--washed the red again with a piece of white which didn't turn but the color catcher did! Would you use it in a quilt??????

If it keeps bleeding I would get in touch with the manufacturer. Wash in hot water one more time and see if it bleeds again after that. I would still get in touch with the manufacturer. I don't feel with what all of us pay for material that we should have to worry about bleeds and it irritates the crap out of me.

If it were me, I would not use it in a quilt until it had been treated with Retayne.

It annoys me sooooo much when a commercially dyed fabric - is not colorfast.

It annoys me sooooo much when a commercially dyed fabric - is not colorfast.

I think we, as buyers, should always return the offending piece to the store and make a big stink about it.

Of course, that also means keeping the sales receipts and getting the fabric wet within a reasonable time after purchase.

I had a Kaufman Kona med. green bleed like crazy. I contacted their customer service with immediate helpful response. It was the very best customer service I have ever experienced.

I use Retayne.

Thanks for the information.