Prep 4.4 by Leather Doctor is a water-based, preparatory cleaner that works on heavy soiling for pH-sensitive leather, nubuck, and suede safe from side effects.
People Also Ask:
What is Prep 4.4?
Prep 4.4 is the leather-safe milder version of Prep 7.7 for all leather types including the common Vachetta, Nubuck, suede, wet-white, and all aniline leather types.
How Prep 4.4 Works?
Prep 4.4 works by allowing sufficient dwell time to penetrate, lubricate, and suspense prior to towel extraction.
What is a Prep 4.4 Reverse-Transfer Technique?
Prep 4.4 reverse-transfer technique allows suspended stain during dwell time to wick and be absorbed through a stretchable absorbent towel and peeled off, rather than being reabsorbed by the leather instead.
How does Prep 4.4 work with Clean Dye 7.9?
Prep 4.4 works as a pre-cleaner to remove the mixture of solvents and fatty acids paste component of ballpoint ink, leaving the remaining dyestuff to be further easily removed with Clean Dye 7.9 effectively.
How to Remove Prep 4.4 Sticky Residue?
What Stain does Prep 4.4 Works?
Prep 4.4 works on accumulated soiling, chewing gum, silicone shine, sticky label residue, etc.
What Stain does Prep 4.4 need Clean Dye 7.9 to Work?
The dye component of compound stains remaining will require an effective follow-up dye removal with Clean Dye 7.9 for such stains as ballpoint Ink, blue jean dye, crayon, leather belt, plastic Ink print, marker, newsprint, stamp pad ink, etc.