Product Overview
Leather Tannin Stain Remover Kit A5.ns by Leather Doctor® is a specialized, holistic cleaning and conditioning system designed to remove cellulose-based stains such as coffee, tea, wine, grass, certain dyes, and most plant-based stains. Its pH-balanced formula (3.5) ensures a gentle yet effective cleaning process, making it safe for all types of leather, including Vachetta, Nubuck, pigmented, aniline, suede, hair-on-hide, and woolskin. The system uses an oxidation-reduction (redox) reaction to eliminate stains without physically damaging the leather's structure.
Cleaning and Rinsing System:
Leather Cleaner 3.8
Cleaner 3.8 is a pH 3.8 leather-safe solution that emulsifies and suspends general soil without causing damage. It maintains the leather’s optimal pH range (3-5) and, when paired with Rinse 3.0, ensures a deep clean that leaves no residue while preserving its integrity.
Leather Rinse 3.0
Rinse 3.0 with a pH of 3.0, neutralize alkaline residues, extract suspended soil, and restore the leather’s ionic balance. It enhances the bonding of tanning agents, dyes, and fat liquors, preventing tackiness, color bleeding, and stiffness.
Hydrating and Fatliquoring System:
Leather Hydrator 3.3
Hydrator 3.3, with a pH of 3.3, relaxes leather stiffness, creases, and wrinkles before fatliquoring. It promotes colloidal water movement and reduces surface tension, allowing for even absorption of subsequent conditioning agents.
Leather Fatliquor 5.0
Fatliquor 5.0 is a negatively charged (-ve) fat and oil microemulsion designed to combat dryness, stiffness, and cracking. This pH 5.0 formula replenishes the leather’s natural fat and oil, restoring softness, strength, and elasticity. The fat plumps the leather, while the oil smooths breaks, creases, and wrinkles, prolonging its lifespan.
Redox System:
Leather Tannin Stain Remover 3.5
Tannin 3.5 effectively removes tannin-based stains (e.g., coffee, tea, wine). Its pH 3.5 formula ensures gentle yet powerful stain removal using a leather-safe oxidation-reduction reaction that safely eradicates stains.
Conditioning System:
Leather Protector B
Protector B is a pH 3.0 rub-resistant conditioner that reduces friction and imparts a soft, buttery feel to smooth leather. It forms a non-stick, breathable barrier that minimizes dye transfer, stains, and soiling. It also enhances resistance to rubbing, stretching, scuffing, and abrasion. A scented version, Protector B Plus, is available.
Tools:
Leather Brush 1
A horsehair detailing brush designed for soft and, scratch-free cleaning. Its ergonomic design ensures a comfortable grip and effective results.
Foam Brush 2
A high-density 2-inch polyfoam brush that resists tearing and distributes solutions evenly.
Towel 5
A lint-free, highly absorbent, stretchable, and washable paper towel that functions like cloth.
Mixing Concentrate:
Kit A5.ns products require dilution before use:
Distilled water needed: 1.111 kg (1.22 quarts)
Mixing instructions: Fill bottles up to 1.5 inches below the top (for 8 oz bottles) or to the marked level (for 2 oz bottles).
Application Instructions:
Follow these steps for optimal stain removal and leather restoration.
1. Dry Soil Removal
Gently brush surface stain residues with Leather Brush 1.
2. Spot Cleaning
Use a cotton swab saturated with Cleaner 3.8 to spot-clean stains (e.g., wine). Replace swabs as they absorb the stain.
3. General Cleaning
Apply Cleaner 3.8 with Brush 1 to clean the entire stained section. Extract suspended soil using Towel 5 until no residue remains. Avoid leaving dry edges to prevent ring marks on absorbent leather.
4. Rinsing
Apply Rinse 3.0 evenly across the stained area. Extend application to the edges and avoid dry spots. Use Towel 5 to extract moisture and allow for natural drying.
5. Inspection
Ensure all other stains are removed before proceeding to tannin stain treatment.
6. Redox Treatment
Apply Tannin 3.5 evenly across the surface, ensuring uniform absorption. Allow to dry naturally for the redox reaction to take effect.
7. Inspection
Check if stains have been eliminated. If necessary, repeat treatment. If satisfied, proceed to hydrate.
8. Hydrating
Apply Hydrator 3.3 to draw the remaining suspended stains to the surface. Let it dwell for optimal stain dispersion. Ideal moisture level: Slight moisture should be present when pinched between fingers. Use Towel 5 to extract resurfaced stains. Alternatively, use a reverse-transfer technique with Towel 5 as an extended surface, allowing residual to wick through. Relax and smooth out creases and wrinkles before fatliquoring.
9. Fatliquoring
Apply Fatliquor 5.0 to restore lost fat and oil evenly. Reapply as needed during the drying process to ensure complete absorption. Allow for slow drying for maximum softness.
10. Conditioning
Apply Protector B evenly over the leather. Let it dry before use.
By following these steps, tannin stains are safely and effectively removed while maintaining the leather’s health, softness, and durability.
Updated: February 10, 2025, by Roger Koh.
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