By choosing to get this Powdered Leathercraft Alcohol Oil Dye, you will be foregoing extra transportation and costs that come with getting a normal bottle of dye.Up to 500ml of alcohol based oil dye in a convenient powdered form, ensuring low cost and easy transportation. Simply mix with alcohol to achieve a high quality oil dye for your untreated vegetable tanned leather.The leathercraft powdered dye works excellently on your vegetable-tanned leather when diluted with colourless denatured alcohol (also called Methylated Spirits, Wood Spirit, or Denatured Rectified Spirit). This makes it penetrate the leather much faster and deeper when compared to water-based alternatives. Additionally, being in powdered form, it is exempted from stringent postal regulations that flammable premixed oil-based dyes are subjected to.To use this Powdered Leathercraft Alcohol Oil Dye 500ml for Leather Dark Brown, simply start by mixing it with 500ml colourless denatured alcohol in a container and mix it to prevent crystals from clumping (use less spirit to reduce the vibrance of the colour). Let it sit for an hour before using a soft-bristled brush to apply the dye on your untreated vegetable-tanned leather using even strokes. For consistency in your results, ensure you have cased your leather with water. In the case, there are dye crystals at the bottom of the container that did not dissolve, ensure your leather does not touch it as it can cause streaking on your leather. .Please note: The powdered dye is meant to be mixed with colourless denatured alcohol exclusively (rubbing alcohol, or other kinds of alcohol are not suitable for this product) and the mixture used for treating vegetable-tanned leather alone. This dye should only be used on vegetable-tanned leather that has not been previously treated or dyed. Unfit for use on treated leather like those of handbags manufactured in factories, tabletops, jackets, leather seats, car seats among others. The reason is that a good number of these things have been pre-dyed or pre-treated to discourage subsequent dyeing. There's a great possibility of them having a plastic layer that inhibits the uptake of the dye. However, it is possible to test whether the items can be dyed. Take what you refer as pre-treated or dyed leather and completely clean it using a recommended cleaning agent. Proceed by putting a drop of alcohol on the treated portion. You may need to rub in the alcohol gently. The results can go two ways: the leather absorbs the alcohol without ruining the leather, or it ruins it. The first result indicates that the dye is suitable for leather. Since impeccable results are not guaranteed on pre-treated or pre-dyed leather, it is prudent that you contact the manufacturer for information. A rule of thumb for us is that you always test the dye on a tiny portion of the item before deciding to dye the whole item, especially in the face of uncertainty of the suitability of the dye to the leather.