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Thiourea Dioxide (THIOX) or Spectralite used in Indigo Dye Vats

Price:$6.25+

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Highlights

  • Made by WonkyWeaver
  • Supplies for making crafts
  • Materials: Thiourea Dioxide

Thiourea Dioxide otherwise known as Spectralite or THIOX chemically reduces oxygen from Indigo Dye VAT when using natural indigo dyes to dye fabrics or fibres such as silk, wool, cotton etc. Spectralite is approximately x 5 more efficient at reducing oxygen that the alternative which is known as Sodium Dithionite (HYDROS). This process is essential to ensure that the indigo fixes to the fibre during the dyeing process in the dye vat. Get creative with indigo dyeing, shibori and other tie dye techniques..we love indigo and so should you.

When dyeing cotton it is important to also use Soda Ash to ensure the correct pH (alkalinity) of the dye bath.

Thiourea Dioxide must be handled with care, as it can be harmful and hazardous if inhaled or ingested.

It must also be stored under ambient, and dry conditions.

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  • Ships out within 1–3 business days
  • Returns & exchanges accepted within 30 days
  • Ships from: United Kingdom

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Reviews for this item

What buyers say, summarized by AI: Fast shipping Great quality Love it Well packaged

5.0

We calculate this number using a recency-weighted average of all ratings, with a rating's value decreasing by half each year to best reflect the current experience.

(31 reviews)

5.0 Item quality
4.7 Shipping
4.7 Customer service
100% Buyers recommend
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5 out of 5 stars 5 This item

Etsy buyer Jul 11, 2026

Arrived the following day! Amazing delivery service. Waiting for my woad plant to mature and hopefully not get entirely consumed by cabbage whites, before I can try it.

Etsy buyer Jul 11, 2026

5 out of 5 stars 5 This item

Sarah Jun 24, 2026

Have bought from this company several time and items are good qualilty

Sarah Jun 24, 2026

5 out of 5 stars 5 This item

🅟🅔🅣🅔 Apr 20, 2026

As described and quickly dispatched-many thanks!

🅟🅔🅣🅔 Apr 20, 2026

5 out of 5 stars 5 This item

Patricia Oct 2, 2025

Very helpful and great service. Everything arrived quickly.

Patricia Oct 2, 2025

WonkyWeaver
WonkyWeaver ·

Llandovery, United Kingdom

We calculate this number using a recency-weighted average of all ratings, with a rating's value decreasing by half each year to best reflect the current experience. 4.9
·
9.3k sales
·
6 years on Etsy

Typically responds within a few hours

Typically responds within a few hours

Smooth shipping Has a history of shipping on time with tracking.

Rave reviews Average review rating is 4.8 or higher.

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Listed on Oct 10, 2026

More item details

Note: All details are solely from the seller's listing info.

  • Craft type: Dyeing & batik, Soap making & bath
  • Dye type: Vat
  • Format: Powder