Kit H4 vs. H4 Plus
- For larger hides, the Kit H4 Plus provides additional Hydrator 3.3 and Fatliquor 5.0 to ensure full saturation and treatment.
What Is a Hair-on Hide Rug?
- A Hair-on Hide Rug is a full-sized hide—such as zebra or cow—with the hair intact. The hide is tanned on the reverse as suede. This unique construction requires specialized care to maintain its softness, structure, and appearance.
Why Hair-on Hide Needs Special Care
- Doesn’t lay flat? → It’s likely starved of fatliquor (natural fat & oil).
- Dries stiff after getting wet? → Fatliquor likely leached out during drying.
- Cracking, curling, or folding lines? → Lack of fatliquor weakens, stiffens, or crushes the fibers.
The Solution: Kit H4 System
- This kit delivers a 4-step holistic care system for both the hair and the suede—restoring softness, strength, and appearance. With suede-safe and hair-safe products, the system cleans, hydrates, conditions, and protects your hide from future damage.
Easy-to-Use Concentrate
- Kit H4 concentrates require 1518g (1.7 quarts) to be mixed and filled before use to these selected leather-safe products:
✅ Hair 5.5
✅ Rinse 4.0
✅ S Plus
✅ Soft 3.8
✅ Rinse 3.0
✅ Hydrator 3.3
✅ Softener 5.0
✅ Brush 4
✅ Brush 9
✅ Eraser 5
✅ Foam 2
✅ Towel 1
Hair-on Hide Hair Cleaner 5.5 by Leather Doctor® is a leather-safe, mild disinfectant cleaner for hair-on-hide, wool skin, sheepskin, shearling, and feather.
With a pH value of 5.5, it gently penetrates and lubricates the hair fibers, suspending soil through a chemical reaction that’s safe for both hair and hide and most fabrics—excluding rayon and silk. It also helps reduce common odors that occur during drying. Use Hair-on Hide Hair Cleaner 5.5 by Leather Doctor® for a gentle, safe, and odor-neutralizing clean that preserves hair-on hide's beauty and integrity—especially when paired with matching rinse and conditioner in a full care routine.
Why Use Hair Cleaner 5.5?
- Specifically formulated for hair‑on hides—considerably gentler than standard leather cleaners.
- Prevents common issues like dryness, stiffness, bad odors, and hair follicle breakdown.
- Maintains the hide’s natural texture and luster with minimal risk of damage.
- Part of a complete care system (clean → rinse → hydrate → fatliquor → condition → protect) in Leather Doctor’s kit series Kit H4—which shows how it integrates into proper hide maintenance.
Hair-on-Hide Hair Rinse 4.0 by Leather Doctor® is a pH 4.0 balanced rinse that neutralizes and restores the hair's natural integrity after cleaning.
Conditioner S Plus is the final step in a complete hair-on-hide care system. It is a leather-safe, pH 3.2 leave-in conditioner designed to nourish, soften, deodorize, and protect the hair portion of hair-on-hide, sheepskin, woolskin, shearling, or fur-type leathers.
What is Hair-on Hide Scent Conditioner S Plus?
- A water-based hair conditioner infused with a refreshing scent, formulated for sensitive protein fibers (hair, wool, feathers).
- Part of Leather Doctor’s Hair-on-Hide system, applied after Hair Cleaner 5.5 and Hair Rinse 4.0.
Why Use Hair-on Hide Scent Conditioner S Plus?
1. Softens & Silken the Hair
- Replenishes cosmetic emollients that make hair feel soft, light, and tangle-free.
- Ideal for pet bedding, fur garments, shearling boots, rugs, and hair-on furniture that has become dry, wiry, or coarse.
2. Deodorizes with a Clean Scent
- Imparts a refreshing fragrance that lingers lightly in the hair, masking musty, body, or pet odors.
- Excellent post-cleaning for items that previously had urine, sweat, or soil odors.
3. Anti-Static & Anti-Frizz Benefits
- Reduces electrostatic buildup, especially in drier climates or winter months.
- Hair lies flatter, less prone to fluffing or matting.
4. Protective Film Barrier
- Forms a breathable layer over each hair strand that:
- Repels dry airborne particles like dust and dander.
- Improves groomability.
- Retards rehydration loss, keeping hair supple longer.
5. Restores the Look & Feel of Luxury
- Enhances the shine and brilliance of the hair.
- Maintains the natural bounce and movement—like a salon conditioner, but for fur/hair hides.
When to Use Hair-on Hide Scent Conditioner S Plus?
- Final step in a complete hair-on-hide routine (after Hair Cleaner 5.5 → Hair Rinse 4.0).
- After each deep clean or odor treatment.
- Anytime hair feels dry, lifeless, musty, or frizzy.
Tannery Science Perspective:
The product rebalances the ionic attraction in hair protein structure at its isoelectric point (pH ~5.5), ensuring the emollients bond correctly without weakening the hair shaft or follicles. This maintains hair fiber strength and elasticity while improving aesthetics.
Hair-on-Hide Hide Soft Cleaner 3.8 by Leather Doctor® is a leather-safe, pH 3.8 mild leather hide cleaner formulated to effectively emulsify and lift general soiling from floor soil without causing common side effects.
- Soft 3.8 is among the mildest of cleaners with a lower cleaning power than Strong 4.3, or Super 4.9.
Soft 3.8 Key Benefits:
- Gently Cleans Without Harsh Effects – Maintains the hide’s natural integrity.
- Prevents Rings & Browning – Ideal for pH-sensitive hides.
- Residue-Free with Rinse 3.0 – Restores the hide’s pH balance for long-term care.
Hair-on-Hide Hide Rinse 3.0 by Leather Doctor® is a pH 3.0 leather-safe rinse formulated to remove suspended soil and restore the pH balance of leather hide, ensuring its structural integrity and long-term durability.
Rinse 3.0 Key Features & Benefits:
- Removes Suspended Soil – Lifts and extracts emulsified soiling for a clean, residue-free finish.
- Neutralizes Alkaline Residue – Restores pH balance to prevent damage from alkaline overexposure.
- Prevents Tackiness & Dye Bleeding – Stabilizes the leather hide structure, reducing unwanted texture changes.
- Enhances Leather’s Ionic Charge – Recharges the leather hide with a positive (+ve) charge, improving its ability to bond with negatively (-ve) charged tanning agents, dyestuff, and fatliquor.
- Preserves Suppleness & Durability – Helps maintain the leather hide’s softness, preventing stiffness and cracking.
Hair-on-Hide Hide Hydrator 3.3 is a leather-safe pH 3.3 aqueous surfactant solution formulated by Leather Doctor® to clean, hydrate, relax, and restore the hide’s internal structure during cleaning, conditioning, and restoration processes - in line with its tannery science-based function.
- It mimics the hydration stage of tannery pre-conditioning to prepare hide for deeper structural rejuvenation.
Hydrator 3.3 Key Benefits:
- Rehydrates dried, stiff, or collapsed fiber structure
- Restores moisture to the hide’s protein fibers, relaxing them so they can regain flexibility.
- Essential before fatliquoring with Softener 5.0 so fats and oils can penetrate deeply and bond properly.
- Displaces and flushes out impuritie
- Helps suspend and wick out residual floor soiling, or alkaline contamination that may have seep from the edge of the hide.
- Balances pH and readies hide for further treatments
- The mild acidic pH of 3.3 re-aligns the ionic charges of the hide structure, making it receptive to fatliquor softener and protecting against pH damage.
- Helps reduce stiffness and restore suppleness
- When used alone or in conjunction with fatliquor, Hydrator 3.3 is critical for achieving uniform softness, without patchiness.
Tannery science basis
- In professional tanning and retanning, hides are hydrated before fatliquoring to ensure that treatments penetrate evenly and bond effectively.
- Hydrator 3.3 replicates this essential tannery hydration step at the restoration stage, particularly for dried-out, stiff, or aged hide.
Hair-on-Hide Hide Softener 5.0 by Leather Doctor® is a pH 5.0 emulsion of fat, oil, and water, a fatliquor softener conditioner to replenish dry leather hides, in line with its tannery science-based function.
Softener 5.0 restores leather hide’s internal lubrication, flexibility, strength, and resilience, replenishing the original fatliquor content of leather hide’s fibrous structure.
- Mimicking the essential fatliquoring stage in professional tanning and retanning processes.
Softener 5.0 Key Benefits:
- Lubricates and nourishes the leather hide structure
- Softener 5.0 deposits fat and oil molecules that bond to the amphoteric protein fibers.
- These lubricate the fibrils, allowing them to slide over each other without stiffness, brittleness, or cracking.
- Reinforces tensile strength and elasticity
- Proper fatliquoring prevents fiber embrittlement and maintains leather hide’s natural strength and softness.
- Restores suppleness and prevents future damage
- Leather hide loses fat and oil over time due to aging, heat, sunlight, alkaline exposure, or cleaning.
- Replenishing it prevents shrinkage, stiffness, and cracks.
- Provides long-term structural protection
- Maintains leather hide’s dimensional stability and ability to flex without damage.
Tannery science basis:
- In the tannery, fatliquoring is one of the final and most critical stages after tanning.
- It ensures that leather hide stays soft, strong, and flexible as it dries.
- The fats and oils form a molecular film around the protein fibers, acting as internal lubricants.
Softener 5.0 brings this same process to hide restoration.
It ensures the hide is not just “looking good on the surface” but structurally rejuvenated from within.
Products: Hair Cleaner 5.5 + Hair Rinse 4.0
Tools: Foam Brush 2, Hide Brush 4, Towel 1
- Brush hair in one direction, vacuum loose debris.
- Spray Hair 5.5, brush gently, and extract with a folded towel.
- Repeat process using Rinse 4.0 to balance pH and rinse thoroughly.
- Continue towel blotting until it shows clean and dry.
Product: Conditioner S Plus
Tools: Hide Brush
- When hair is dry, spray S Plus evenly.
- Brush in the direction of the hair and allow to air-dry.
- Re-brush to “bloom” and soften the hair.
Products: Suede Cleaner 4.5 + Suede Rinse 3.0
Tools: Hide Brush 4 (steel), Eraser 5, Towel 1
- Dry brush in one direction and erase with Eraser 5 to exfoliate aging fibers.
- Spray Cleaner 4.5, brush, erase, and towel extract suspended soiling.
- Repeat with Rinse 3.0 to restore pH balance and further extract residue.
- Allow to dry—wicked-up soiling may surface, so repeat brushing and vacuuming.
Products: Hydrator 3.3 + Fatliquor 5.0
Tools: Foam Brush 2
- Spray Hydrator 3.3 and spread with a foam brush to saturate the suede.
- Massage, flex, and stretch until the hide lies flat and relaxed.
- Apply Fatliquor 5.0 in cycles—allow water to evaporate between applications—until the hide absorbs no more.
- Final drying should be slow and natural for best suppleness. While still damp, flex and stretch the hide to prevent stiffness.
- Any sticky residue can be wiped with Hydrator 3.3 and a towel.
If the suede side is inaccessible (e.g. due to lining), Hydrator 3.3 and Fatliquor 5.0 can be applied from the hair-on side by gently parting hair to reach the hide base.
| Task | Product(s) | Tool(s) |
| Hair Cleaning | Hair 5.5 + Rinse 4.0 | Brush, Towel |
| Hair Conditioning | Conditioner S Plus | Brush |
| Suede Cleaning | Suede 4.5 + Rinse 3.0 | Brush, Eraser, Towel |
| Hydrate + Fatliquor | Hydrator 3.3 + Fatliquor 5.0 | Foam Brush |
- Always work in a well-ventilated area.
- Avoid heat during drying—natural air drying gives the best suppleness.
- Maintain your hide seasonally or after spills, moisture exposure, or visible changes.
Reach out anytime. Your feedback helps us continue refining these systems to serve your leather care needs better.
Updated: April 19, 2025 | July 14, 2025 | August 18, 2025 by Roger Koh.
1 Review Hide Reviews Show Reviews
-
Highly effective for Game Skin Rugs (H4 Plus)
I had two game skin rugs, a Zebra hide and a Wildebeest hide from my trip to South Africa that were giving me trouble laying flat after a few months at home. The edges of some areas of the rug were curling up and nothing would bring them back to shape. This kit both rehydrated and relaxed the hide in even the most stubborn thick areas allowing it to lay perfectly flat again.