| Color precursor | |
| Film formers | 14.00%w/w |
| Plasticizers | 5.00 |
| Volatile solvent | 79.00 |
| 3,3-bis(2-Methyl-1-octyl-1H-indol-3-yl)phthalide (color precursor) | 0.50 |
| Aminomethylpropanol | 0.40 |
| Pigments/fillers | 1.00 |
| Gelling agent | 0.10 |
| Color activator | |
| Isopropyl alcohol | 96.00 |
| Citric acid | 4.00 |
| Color deactivator | |
| Isopropyl alcohol | 95.00 |
| Aminomethyl propanol | 5.00 |