Product Overview
Leather Prep Cleaner 4.4 by Leather Doctor is a specialized pH 4.4 solution designed for deep cleaning heavily soiled, pH-sensitive leather, nubuck, and suede.
This advanced formula effectively removes accumulated dirt, silicone shine, sticky residues, and greasy stains while ensuring a safe and effective cleaning process.
Deep Cleaning Solution for pH-Sensitive Leather, Nubuck, and Suede
Key Benefits:
- Deep cleans heavily soiled leather, nubuck, and suede
- Removes accumulated dirt, grease, and sticky residues
- Eliminates silicone shine for a natural finish
- Safe for pH-sensitive materials
Recommended Cleaning Process:
- Application: Apply Prep 4.4 to the affected area and agitate gently using a brush or eraser.
- Suspended Residue Removal: Follow up with Cleaner 3.8 to lift and remove any suspended residues.
- pH Balance Restoration: Complete the process with Rinse 3.0 to restore the natural pH balance of the leather.
For Stubborn Greasy Stains with Dye Components:
When dealing with persistent stains such as ballpoint ink, blue jean dye, crayon, leather belt marks, plastic ink prints, newsprint, and stamp pad ink, follow up with Dye 7.9 for optimal stain removal.
Perfect for professional leather care and restoration. Get yours today for safe and effective leather maintenance!
Instruction:
- Apply and work with a horsehair brush on heavily soiled areas
- Before it dries, suspended soiling is towel extracted until it shows clean.
- Cleaner 3.8 is applied over the cleaned area extended without a dry edge and extracted with a towel.
- Rinse 3.0 rinses over the cleaned area without leaving a dry edge and towel extract to a healthy squeak.
- Proceed with Hydrator 3.3.
- Continue with Fatliquor 5.0.
- Ends with Protector B.
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, and Wet-White.
How does Prep 4.4 Work?
Prep 4.4 works by allowing sufficient dwell time to penetrate, lubricate, and suspend before 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.
How does Prep 4.4 work with 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 effectively removed with Dye 7.9.
How to Remove Prep 4.4 Sticky Residue?
Prep 4.4 sticky residue is removed with Cleaner 3.8 and pH balancing rinse with Rinse 3.0 as a holistic system.
What are the Related Products?
Degreaser 2.2 for degreasing body oil, grease, and sweat.
Acidifier 2.0 for neutralizing alkaline toxicity and overexposure tackiness.
Updated: April 5 2025, by Roger Koh.