VILOU leather lexicon – types of leather, care & repair

VILOU Leather Knowledge · Original Leather Technology since 1999

The comprehensive VILOU leather lexicon

Identifying leather types, correctly assessing damage and selecting the right product: This reference book combines understandable leather knowledge with specific care, repair and color knowledge for cars, steering wheels, furniture and boats.

Important: Not all leather and not all damage is treated the same. Therefore, always start with the material and the type of damage – only then should you select the product.

Directly to the leather knowledge you're looking for

material

What type of leather do I have?

Smooth leather, aniline leather, nubuck, synthetic leather or Alcantara differ fundamentally in terms of cleaning, care and repair.

Different types of leather →
diagnosis

What damage has occurred?

Dirt, grease, paint abrasion, scratches, cracks and holes require different work steps.

Determine damage →
Application

What is the purpose of each product?

Cleaners, degreasers, liquid leather, leather dye, sealants and protectors have clearly separate tasks.

Compare products →

The most important basic rule

1

determine material

Is the surface closed, open-pored, velvety, or a textile or synthetic material?

2

Determine damage

Is there dirt on the surface, or is paint, coating, or material already missing?

3

Select product

Use only products that are suitable for the type of leather, the damage, and the desired result.

Always test beforehand: Test each product on a hidden area for material compatibility, color change and surface effect.

Identifying and correctly classifying leather types

material Typical characteristics What should be taken into account?
Pigmented smooth leather Uniform, protected surface; liquid is not absorbed immediately. Main application area of ​​many VILOU cleaning, repair and coloring products.
Semi-aniline leather Lightly protected, more natural than heavily pigmented leather. Treat only after careful material inspection.
Aniline leather Open-pored, natural features visible, liquid absorbs quickly. Not generally suitable for the described standard paint and sealant systems.
Nubuck and suede leather Velvety, sanded surface with visible lines. Do not use smooth leather dye, liquid leather, or smooth leather sealant.
Faux leather/Vinyl Plastic-coated backing material without natural leather fibers. Use only expressly suitable products; take into account aging and loss of plasticizers.
Alcantara/Microfiber Textile microfiber, often with a velvety surface. Not leather. Do not treat with the leather dyes and fillers described here.
Perforated leather Numerous small ventilation openings. Work very thinly and do not seal openings with paint or filler material.

Correctly diagnosing damage

pollution

A coating is present on an otherwise intact surface. Clean it first, allow it to dry completely, and then reassess.

Fat load

Dark or greasy areas often appear on steering wheels, headrests, and armrests. Degrease thoroughly before repair or painting.

Color abrasion

The surface is structurally intact, but the pigment layer and color are worn. Prepare, apply a thin coat of color, and then protect.

scratch

Superficial lines can be smoothed and color-matched after cleaning. Deep scratches may require filler.

crack

Open or loose edges must first be stabilized. Paint alone will not close a crack.

Hole or seam damage

Missing material and damaged seams require professional backing or skilled repair.

Product knowledge in six steps

What is the purpose of each VILOU product?

VILOU Leder Reiniger
1. Cleaning

VILOU Leather Cleaner

Removes suitable water- and dirt-based surface contaminants. It is the first step before maintenance and many repairs.

VILOU Leder Entfetter
2 · Preparation

VILOU Leather Degreaser

Reduces grease, oil, silicone and care product residues that can impair the adhesion of repair material or leather dye.

VILOU Flüssigleder
3 · Repair

VILOU Liquid Leather

It fills small depressions, surface cracks, and imperfections. It is applied in several thin layers and smoothed after drying.

VILOU Lederfarbe
4 · Dyeing

VILOU leather dye

Refreshes the color of suitable pigmented smooth and synthetic leathers. First, select automotive or furniture leather colors; if the desired shade is unavailable, a sample can be requested.

VILOU Leder Versiegelung
5 · Shooters

VILOU Leather Sealant

Protects suitable surfaces against wear and tear and discoloration from clothing. It is not a traditional leather care product.

VILOU Leder Protector
6 · Care

VILOU Leather Protector

Supports suppleness and color brilliance, protects against dehydration and offers UV and aging protection.It does not replace sealing.

System order: Cleaner → Degreaser → Liquid Leather → Leather Dye → Leather Sealer → Leather Protector. Not every type of damage requires all six products, but the order must not be arbitrarily changed.
Complete solutions

VILOU sets for coordinated applications

If multiple work steps are required, the kits bundle the necessary components. Before purchasing, check the material, damage pattern, and color.

VILOU Lenkrad Reparatur Set
car

Steering wheel repair kit

A coordinated system for the refurbishment of suitable leather steering wheels with color abrasion and typical signs of wear.

VILOU Lederpflege Set
Care

Leather care set

For the coordinated cleaning, care and protection of suitable leather surfaces in the automotive and furniture sectors.

VILOU Leder Reparatur Set Schwarz
repair

Leather Repair Kit Black

For suitable black smooth leather surfaces with color abrasion and minor repairable damage.

Sealant or protector?

Leather sealing

  • Protection against wear and tear
  • Protection against suitable clothing color transfer
  • after application of paint or on a suitable surface
  • Apply a thin layer, do not buff afterwards.

Leather Protector

  • regular leather care
  • supports suppleness
  • UV and aging protection
  • Preservation of color brilliance

The products complement each other: The sealant primarily protects the surface against abrasion and discoloration; the protector serves for subsequent care and protection against light- and age-related stresses.

The Leather Lexicon from A to Z

Open the search term. The explanations focus on what is practically important for identification, care, repair, and product selection.

abrasion

Mechanical wear and tear due to friction, for example on seat bolsters, steering wheels, or heavily used furniture areas. If the substrate is intact, the surface can be prepared, refreshed in color, and then protected.

Alcantara

Alcantara is a textile microfiber, not leather. It must not be treated with liquid leather, smooth leather dye, or leather sealant.

Aniline leather

Open-pored, transparently dyed leather without an opaque pigment layer. Natural characteristics remain visible. It is absorbent and susceptible to staining; the standard repair and coloring systems described are not universally suitable.

airbrush

Fine sprayer for controlled, thin layers of paint.VILOU ready-to-use leather dye can be applied with a sponge or airbrush, depending on the application. The Professional system is intended exclusively for spray application.

coating

Surface structure, which influences appearance and performance characteristics. It can include, among other things, primer, pigmented paint, effect layers and topcoat.

Full-grain leather

Strong, usually vegetable-tanned leather, often used for belts, saddlery, and dimensionally stable leather goods. It requires care appropriate to the specific finish.

Opacity

The ability of a paint to visually cover the surface underneath. Good results are achieved with several thin coats, not a single thick application.

Dye-through

Color is determined by the cross-section of the leather. A leather dyed through may still have an additional pigmented surface coating.

Degreasing

Reducing suitable grease, oil, silicone, and care product residues before repair or painting. This process is particularly important for surfaces that come into contact with the body.

Genuine leather

The term basically confirms animal origin, but says little about the type of leather, quality, surface or suitable care.

Color abrasion

Wear and tear of the pigmented surface layer. Recognizable by lighter or differently colored areas, while the base material may still be stable.

shade

Color, including brightness, saturation, and hue. Color shades should be assessed as a fully dried sample under suitable light.

liquid leather

Filler material for small depressions and superficial cracks. It does not replace backing, seam repair, or stabilization of deep structural damage.

tanning

The process by which animal hide becomes durable and leather. Besides tanning, the visible surface treatment is particularly crucial for subsequent care.

Gloss level

Optical surface appearance ranges from matte to satin to glossy. Color and gloss level must be assessed together.

Smooth leather

Leather with the grain side facing outwards. Smooth leather can be open-pored, lightly protected, or heavily pigmented – the term alone therefore does not constitute product approval.

Primer

A preparatory system step that conditions the substrate for the subsequent paint application. In the planned VILOU Professional system, the primer is part of the spray application process.

faux leather

Plastic-coated backing material. It does not contain natural leather fibers and can show different damage than genuine leather due to aging, heat, or loss of plasticizers.

Leather color

Color product for refreshing suitable leather and imitation leather surfaces. The color does not repair unstable structures and does not replace filler material.

Leather fiber material

Material made from shredded leather fibers and binders. It is not equivalent to a cross-section of natural leather.

Nappa

A collective term for particularly soft, smooth leather. The term does not clearly indicate whether the surface is open-pored, semi-aniline, or pigmented.

Scarring

Visible surface texture. It can be natural, corrected, or artificially embossed. A uniform embossing does not automatically prove that it is synthetic leather.

Nubuck leather

Suede with a velvety surface, sanded on the grain side. It requires special suede products and should not be treated like pigmented smooth leather.

Perforated leather

Leather with small ventilation holes. Liquid leather and too much dye can clog the holes; therefore, work with a particularly thin layer.

Pigmented leather

Leather with a color-enhancing and protective surface coating. This is the primary application area for many VILOU care, repair, and coloring products.

Protector

A care product for suppleness, color brilliance, and UV and aging protection. The Protector does not replace leather sealing against abrasion.

Pull-up leather

Leather treated with oils or waxes that lightens when stretched or creased. This desired effect should not be indiscriminately covered with pigmented dye.

suede

A general term for leather with a sanded, velvety surface, such as nubuck or suede. Do not treat with smooth leather products.

Recipe

Documented composition or color mixture. A saved color formula enables reproducible reorders.

Semi-aniline leather

Lightly pigmented leather, whose natural characteristics remain more visible than in fully pigmented leather. Inspect carefully before each treatment.

Split leather

A split obtained from a lower layer of skin. It can be used as velour or finished with foil or a coating.

Top Coat

Topcoat of a professional coating system. In a coordinated system, it provides protection, abrasion resistance, and the desired gloss level.

suede

Suede, sanded on the flesh side, with a velvety surface. It is cared for differently than pigmented smooth leather.

Networker/Crosslinker

A system additive that is only dosed and used according to specific product instructions. Not every paint or topcoat system requires a crosslinker.

sealing

Protective layer against suitable abrasion and discoloration. VILOU leather sealant is applied thinly and does not require buffing.

vinyl

A plastic material frequently used for vehicle, furniture, and boat upholstery. The suitability of the product for the specific type of plastic must be tested before treatment.

Full-grain leather

Leather with the grain side intact and not sanded down. Full grain does not automatically mean open-pored or maintenance-free.

finishing

Surface treatment consists of primer, color, effect and protective layers. The finish determines color, gloss, feel, durability and maintenance requirements.

Free customer manual

Open the large VILOU VILOU leather manual

26 pages with 22 chapters for reference and printing: types of leather, material identification, damage, product selection, color system, applications, quantity recommendations, error prevention, care plan, checklists, FAQ and leather lexicon.

Open the VILOU leather manual for free

Edition 2026 · The current product labeling, instructions for use and the safety data sheet remain authoritative.

From knowledge to the right solution

You are not yet aware of the material or damage.

The leather repair assistant guides you from car, furniture or boat, through the damage pattern, to the appropriate instructions and products.

Material limit: The standard applications described are not universally suitable for Alcantara, suede, nubuck, and open-pore aniline leather. Large tears, holes, damaged seams, and safety-relevant seating areas should be handled by professionals.