RIT Fabric Dyes FAQ
All-Purpose or DyeMore, which one do I actually need?
It comes down to fibre content. All-Purpose Powder and All-Purpose Liquid work on natural fibres like cotton, wool, and linen, plus rayon and nylon. If the garment has any real polyester, acrylic, or acetate content, All-Purpose won't take evenly on those fibres, that's what DyeMore Liquid is built for. Check the fabric label first, a lot of "cotton" fast fashion pieces are actually a poly blend, which is the single biggest reason people get patchy results.
Does polyester or a poly blend dye properly with Rit?
Pure polyester won't take standard Rit dye at all, that's a synthetic fibre that needs DyeMore specifically, and even then results are more muted than on natural fibres. On a poly blend, only the natural fibre portion absorbs colour, so a 65/35 poly-cotton shirt will come out lighter and often patchy rather than a solid new colour. If you're not sure of the fabric content, test a small hidden patch first rather than dyeing the whole item.
Powder or liquid, does it make a difference?
Both work well, the difference is convenience versus strength. Liquid is premixed and easier to use straight away. Powder needs dissolving first but tends to give a slightly stronger, more saturated colour for the same amount of product, which matters more when you're going for a darker target colour.
Do I actually need ColorStay Fixative, or can I skip it?
It's worth using if you're dyeing natural fibres and want to stop colour transferring in future washes, without it, a freshly dyed garment can bleed onto other clothes for several washes. The ColorStay Fixative is optional if you're only after a one-off tie-dye effect where a bit of bleed doesn't matter.
What's ProLine for, do I need it for a single garment?
ProLine is Rit's bulk, professional line, built for dyeing large quantities or fabric by the metre, not a single t-shirt. For one or two garments, All-Purpose Powder or Liquid is the right size and far more economical than opening a professional-volume tub for a small job.
Are the tie-dye kits worth it over buying dye separately?
If you want a specific look, like Back to Black, Back to Blue, or Indigo Shibori tie-dye, without guessing quantities or colour ratios, the kits take the guesswork out and include the tools you need. If you already tie-dye regularly and know your ratios, buying All-Purpose dye separately works out cheaper over time.
Is Sun Guard actually a dye?
No, don't confuse it with the colour range. Sun Guard is a laundry additive that boosts a fabric's UPF sun protection rating, it doesn't change colour at all. It's a separate product for adding sun protection to garments you already own, not a dye.