A wood dye is mostly colourant and solvent. Sometimes in the case of water based dyes there might be a small amount of acrylic resin in it to bind the colour. However,as a rule dyes are not strong enough to be left without a tougher top coat to stop them from wearing. Dyes work most effectively on absorbent bare wood. Stripped wood is often problematic as it can be very unevenly porous. This is where a woodstain might be better. Woodstains are a combination of colour, solvent and resin, are reasonably strong and will make a more even coat of colour on older wood.
We also stock some brightly coloured dyes that are suitable for bare wood.