BT20 is an Iron Blue Toner which comes in three parts to make a single working solution. Equal parts 1,2&3 are diluted with water. Full instructions supplied on mixing ratios and timings to achieve shades, depth and brilliance of blue tones required.
BT20 is an Iron Blue Toner which comes in three parts to make a single working solution. Equal parts 1,2&3 are diluted with water. Full instructions supplied on mixing ratios and timings to achieve shades, depth and brilliance of blue tones required.