Description

Leather Fatliquor 5.0+ (Scent 5.0+) by Leather Doctor® is a pH-Balanced 5.0 leathery scent, anionic emulsion of fat, oil, and water conditioner/fatliquor/softener that replenishes all leathers, reducing dryness, stiffness, and preventing cracking, in line with its tannery science-based function.

It restores leather’s internal lubrication, flexibility, strength, and resilience, replenishing the original fatliquor content of leather’s fibrous structure—mimicking the essential fatliquoring stage in professional tanning and retanning processes.

Replenish. Soften. Strengthen.

Bring your leather back to life with a conditioning treatment that restores suppleness and leaves behind a clean leather scent.

Key Features & Benefits

Micro-Emulsion Formula

Fat, oil & water blend deeply bonds leather fibers for lasting softness.

Natural Leather Scent

Lightly fragranced for a fresh, revitalized aroma.

Crack & Dry Rot Prevention

Prevents premature aging, stiffness, and fiber damage.

Restores Strength & Flexibility

Enhances stretchability, compressibility & tensile strength.

Safe for All Types

Works on full grain, suede, nubuck, and hair-on-hide.

How It Works

Ionic Bonding Technology

Carries a negative (-ve) charge to hydrogen bond with the positive (+ve) leather fibers, improving breathability.

Water-Evaporating Suspension

83.33% water evaporates after bonding, leaving fat and oil behind.

Fat Content

Plumps leather fibers, helping them resist creases and collapse.

Oil Content

Lubricates fibers for smooth, hinge-like movement and softness.

Application Guidelines

Step 1: Relax with Hydrator 3.3

Loosens and opens up fibrous structure for better absorption.

Step 2: Soften with Fatliquor 5.0+

Apply until leather feels damp but not over-saturated.

Recommended Ratio

Hydrator 3.3 : Fatliquor 5.0+ = 2 : 1
Example: 160g Hydrator + 80g Fatliquor for 100g dry leather.

Dry Leather Indicator

Moisture content <7% signals readiness for fatliquoring.

Target Fatliquor Content

Restore leather to ~14% fat & oil by dry weight (typical tannery level).

Pro Tips for Best Results

Pre-clean surface using:

Eraser 4 for leather/nubuck
Eraser 5 for suede

☀️ Avoid heat drying—air dry naturally in shade for even results.

✋ Leather may darken if pre-existing soil resurfaces; stretch lightly to reduce appearance.

Proper fatliquoring ensures that leather retains its tensile strength, resists breakage, and maintains its natural softness, preventing premature aging and deterioration.

Fatliquor 5.0 is the original scentless version.

Why Hydrator 3.3 Comes Before Fatliquor 5.0

Hydrator 3.3 prepares the leather; Fatliquor 5.0 replenishes its internal lubrication.

Hydrator 3.3 — Temporary Hydration and Fiber Relaxation: Temporarily hydrates and relaxes the leather fiber structure, preparing it to receive Fatliquor 5.0. It serves as a preparatory medium rather than a permanent source of internal lubrication.
Fatliquor 5.0 — Internal Fat and Oil Replenishment: Replenishes the internal fats and oils that lubricate the leather fibers, helping maintain or restore softness, suppleness, and flexibility.

When Should Fatliquor 5.0 Be Applied?

Use a wet-on-wet application sequence during leather rejuvenation. Apply Fatliquor 5.0 after Hydrator 3.3 has sufficiently hydrated and relaxed the leather, while the leather remains appropriately moist and receptive to absorption.

The application window is determined by the leather's condition, not a fixed waiting time:

Apply Hydrator 3.3 to the absorbent leather as directed, allowing it to penetrate and relax the fiber structure.
Apply Fatliquor 5.0 while the leather remains appropriately hydrated. Do not wait for the leather to dry completely between these stages.
If the leather has dried before fatliquoring, reassess its condition and follow the recommended procedure for rehydration before proceeding, if necessary.

Work in controlled applications, allowing each product to penetrate without saturating the leather or leaving excessive liquid on the surface. Avoid applying additional solution when the leather is already too wet to absorb it effectively.

Are Both Products Always Necessary?

Not for every cleaning or maintenance task. When absorbent leather requires rejuvenation because of dryness, stiffness, or reduced suppleness, Hydrator 3.3 and Fatliquor 5.0 perform complementary functions. Hydrator temporarily relaxes the fiber structure; Fatliquor replenishes the internal fats and oils.

Remember: Hydrator 3.3 prepares the leather, and Fatliquor 5.0 replenishes its internal lubrication. Apply wet-on-wet while the leather remains appropriately hydrated and receptive—not after complete drying.

Instruction:

1️⃣ Concentrate is mixed well before adding distilled water 1:5 before use.
2️⃣ Apply and redistribute with appropriate brushes or pads until structure is saturated.
3️⃣ Repeat each cycle water contents evaporate leaving behind only the fat and oil content.
4️⃣ Allow natural drying for extra softness.
5️⃣ The desired suppleness is further staked and massaged, accordingly with a little wet back with Hydrator 3.3 until dry.

Product Reviews - Posted by Larry Bauman on 31st Jul 2017 -

The Lazarus Effect https://leatherdoctor.com/sheepskin-care-kit-sr3/#product-reviews

This product revived my 40-year-old Sheepskin coat that cracked at the touch of it after applying another company's 'Restoration' product. That other product ruined my coat, and I was about to throw it away but took a chance on the Leather Doctor. After applying Hydrator 3.3, I saw an immediate change. I then continued with the Fatliquor 5.0 and was shocked to see the change. My coat is now as soft and supple as it was when I purchased it in 1975! Don't even take a chance on valuable leathers with other companies' products, this one will amaze you with its results.

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Leather Fatliquor 5.0+ (Scent 5.0+)

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Leather Fatliquor 5.0+ (Scent 5.0+)