PLEASE NOTE:
Sodium hydrosulphite (‘hydros’ or ‘spectralite’) is currently unavailable. Thiourea dioxide (‘thiox’) can be used for indigo and woad dyeing in the same way using the same process and quantities.
Uses:
Thiourea dioxide, also referred to as ‘thiox’ or under the brand name is an effective, oxygen-reducing agent for use in indigo and woad (vat) dyeing.
Used in conjunction with sodium carbonate (‘soda ash’) it is reliable and straightforward to use.
Can be used as an alternative to sodium hydrosulphite (‘hydros’), or spectralite.
