These acid dyes are 100% pure dye stuff. They are not diluted with citric acid or any other fixative.
Acid dyes provide a simple system for use with dyeing silk fabrics, protein fibres (wool, camel, fur, cashmere) and some synthetics (nylon). They give a brighter colour with silk than fibre reactive dyes and can also be used for silk painting.
The dyes themselves are not acidic, the word acid merely referring to the vinegar (acetic acid) which is used to help set them.
The quantity of dye used depends on the depth of colour you want. It is measured in relation to weight of fibre or yarn to be dyed. Use 1% of the weight of fibre for a pastel shade, 2% for a strong shade and 4% for a full completely saturated shade. We recommend always using 4% with black acid dye. When using the strong 2% shade, 50g of our acid dye will dye 2500g's of fibre.
Deep colours will need much more, while you can get lovely pale colours with far less.
The dyes are set using citric acid or distilled vinegar in a hot dyebath or they can be set using the heat from steam.
Please note: the label on the jar in the image, and colour chart, provide an indication of dye colour only.
