Leather Strong Prep Cleaner 7.7

Leather Doctor®

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$24.95 - $223.95
Leather Prep Cleaner 7.7 by Leather Doctor is a pH 7.7 mild alkaline preparatory cleaner designed for non-absorbent leathers for restorative cleaning.
Weight:
0.180 KGS
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Product Overview

  Leather Strong Prep Cleaner 7.7 by Leather Doctor® is a pH 7.7 mild alkaline preparatory cleaner designed for non-absorbent leathers as part of a leather-safe cleaning and rinsing system that ensures proper pH balancing (3-5) to maintain leather integrity.

 Prep 7.7 Key Features & Benefits:

 Deep Penetration & Lubrication – Effectively breaks down accumulative soiling without excessive agitation
 Safe for Non-Absorbent Leathers – Designed for coated leathers where deep absorption is not required
 pH-Balanced System – Works holistically with Soft 3.8 and Rinse 3.0 to restore leather’s pH balance
 Tackiness Rectification – Acidifier 2.0 effectively neutralizes previous alkaline overexposure, restoring a healthy, squeaky feel

 Recommended Cleaning Process:

  Apply Prep 7.7 – Allow dwell time for deep penetration and soil suspension
  Follow with Soft 3.8 – Removes sticky residue and emulsified soiling
  Neutralize with Rinse 3.0 – Restores pH balance for a healthy, residue-free finish
 Use Acidifier 2.0 (if needed) – Corrects tackiness caused by alkaline overexposure

 

This non-aggressive yet powerful cleaner preps leather surfaces for optimal maintenance and refinishing. 

 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.  

 Instruction:

  1. Prep 7.7 is applied and spread with a foam brush and agitate in a circular motion with a horsehair brush and towel extract until the towel shows clean.
  2. Soft 3.8 is applied and work in a circular motion and towel extract suspended soiling until the towel shows clean.
  3. Rinse 3.0 is applied, work in a circular motion, and towel extract until it shows clean to a healthy squeaky feel.
  4. Acidifier 2.0 a strong pH balancer is an option to achieve a healthy, squeaky feel.
  5. Protector B completes the restorative cleaning with a nonstick rub-resistant buttery feel condition.

People Also Ask:

  1. How Reverse Transfer Technique Works with Prep 7.7?
  2. How does Prep 7.7 work with Dye 7.9 in Ballpoint Ink Removal?
  3. How to Remove Prep 7.7 Sticky Residue?
  4. What Stain Does Prep 7.7 Work?
  5. What Stain does Prep 7.7 need Dye 7.9 to continue Working?
1 How Reverse Transfer Technique Works with Prep 7.7?
  • The reverse transfer technique allows suspended soiling to wick through a tight, absorbent, stretchable paper towel and be peeled off.

2 How does Prep 7.7 work with Dye 7.9 in Ballpoint Ink Removal?

  • Prep 7.7 works to remove the mixture of solvents and fatty acids paste component of ballpoint ink, leaving the dyestuff to further easily remove with Dye 7.9 effectively.

3 How to Remove Prep 7.7 Sticky Residue?

  • Prep 7.7 sticky residue is removed with Soft 3.8 and pH balancing rinse with Rinse 3.0 as a holistic system.

4 What Stain Does Prep 7.7 Work?

  • Prep 7.7 works on accumulated soiling, chewing gum, silicone shine, sticky label residue, etc.

5 What Stain does Prep 7.7 need Dye 7.9 to continue Working?

  • The dye component of compound stains will require an effective follow-up dye removal with Dye 7.9, such as ballpoint Ink, blue jean dye, crayon, leather belt, plastic Ink print, marker, newsprint, stamp pad ink, etc.

Updated: March 19, 2025 | June 7, 2025 by Roger Koh.

 

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