This is straight from the CTI stain Guide
Hair Dye
Generally you will find this type of stain to be removable from stain resistant nylons and olefins. You will find it to be more difficult, if not impossible, to remove from wool.
Step 1. Apply Power Gel to stain.
Step 2. Agitate gently but thoroughly to emulsify the spot as much as possible.
Step 3. Thorooughly rinse clean via hot water extraction. Leave as dry as possible by making multiple (vac only) drying strikes.
Step 4. If discoloration remains, apply Red Relief and proceed according to the procedure listed under "Kool Aid" in this book (page # 25)
Kool Aid Procedures
Step 1. Clean stained area using hot water extraction.
Step 2. Blot area dry with clean white towel to remove excess moisture from carpet.
Step 3. Mix Red Relief Part "A" and Part "B" in equal parts.
Step 4. Using trigger sprayer, wet stained fibers with red relief mixture.
Step 5. Cover spot with a moderately wet (excessed squeezed out) terry towel. Note: A lightweight-cleaning towel, folded double works well here.
Step 6. Apply steam heat from an iron set at the lowest steam temperature.
Step 7. Check the stain every 30 seconds.
Step 8. When the stain has turned to a light yellow or has disppeared, remove heat and towel.
Step 9. Extraction rinse chemical residue away.
Tips: Incomplete stain removal is the result of insufficient heating time (high temp is not necessary but dwell time is important). Avoid a conventional iron, use an iron with steam settings.
The CTI (expanded) stain guide that comes with their stain kit is pretty easy to use and has step-by-step instructions for a lot of stains (over 62 pages). They are available for sale seperate from the stain kit.
Hope this helps. You can always call us for ideas too!