Bicast Leather Sticky Topcoat Refinishing Kit B7

Leather Doctor®

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$137.95
Bicast Leather Sticky Topcoat Refinishing Kit B7 by Leather Doctor is formulated to restore the common sticky issue associated with Bicast and simulated leather urethane finishes. Before use, mix with distilled water.
SKU:
Kit B7
Weight:
0.700 KGS
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Product Overview

 Bicast Leather Sticky Topcoat Refinishing Kit B7 by Leather Doctor®  is designed to degrease, pH balance, crosslink, topcoat, and condition bicast leather, effectively solving stickiness issues and preventing recurrence.

 What is Bicast Leather?

Bicast leather (or Bycast leather) is split leather coated with a polyurethane surface layer and embossed for a uniform texture. It is more affordable than top-grain leather, has a consistent texture, and is easier to clean. However, it is prone to delaminating, splitting, and stickiness when exposed to body oils, sweat, and environmental factors.

 What Causes Sticky Bicast Leather?

Bicast leather finishes become sticky, dull, and rough due to exposure to:

 Body oils, grease, and sweat – Penetrate the finish and cause urethane to degrade

 Alkaline cleaners – Break down the polyurethane layer and increase tackiness

 Inert gases & humidity – Accelerate topcoat deterioration

Common sticky leather complaints include:

 Rubbery texture when touched

 Sticky seating areas that cause clothing to stick

 Jeans or fabric imprinting on the surface

 Tape-like sound when sitting and getting up

 If these issues sound familiar, Bicast Leather Sticky Topcoat Refinishing Kit is the solution. 

 How to Prevent Sticky Bicast Leather?

 Clean and pH-balance regularly – Prevents sweat and body oil buildup

 Use a low-pH system – Protects the urethane topcoat from alkaline exposure

 A 3-step preventive system includes:

 Bicast Pro 1.5 – A pH 1.5 cleaner that removes body oils, sweat, and grease

 Acidifier 2.0 – A pH 2.0 rinse that neutralizes alkalinity and prevents tackiness

 Protector B – A non-stick, soft buttery conditioner that reduces stickiness and wear

 How to Fix Sticky Bicast Leather?

 A 4-step refinishing process is recommended for sticky, worn, or damaged Bicast leather:

 Degreasing & Cleaning

              • Degreaser 2.2 removes embedded oils and sweat
              • Acidifier 2.0 pH balances and neutralizes sticky residues
              • Eraser 4 removes surface buildup

 Smoothing & Surface Prep

              • Sand 2000 smooths rough areas

 Topcoat Refinishing

              • Gloss 76 – A water-based urethane gloss topcoat restores finish
              • Crosslinker 64 – A hardener additive that enhances durability and prevents stickiness

 Conditioning & Protection

              • Protector B – A non-stick, buttery feel conditioner reduces friction and future stickiness

 Top Coat Coverage

 Includes 4oz Bicast Gloss 76 mix

 Covers up to 40 square feet with three coats

 Kit B7 Plus covers up to 80 square feet with three coats

 This system fully restores sticky Bicast leather and ensures long-term protection from stickiness reoccurrence.

 Kit B7 concentrates require 433g (0.47 quarts) distilled water to be mixed and filled before use with these selected leather-safe products: 

 Kit B7 Product Summary Includes:

Degreasing and Acidifying Rinse system (Degreaser 2.2 and Acidifier 2.0):  

 Leather Degreaser 2.2 by Leather Doctor® is a professional-grade, water-based solution formulated to remove body oils, grease, and sweat from leather surfaces. 

 Degreaser 2.2 Key Benefits: 

Deep-Cleansing, Leather-Safe Degreaser for All Leather Types: 

 Ideal for use on headrests, armrests, collars, cuffs, handles, and steering wheels, this powerful cleaner penetrates deep to lift embedded grime while maintaining the integrity of the leather.

 With a pH value of 2.2, Degreaser 2.2 is leather-safe and prevents common issues like dye bleeding and surface damage. Unlike harsh solvent-based alternatives, it cleans effectively without drying out or weakening the leather structure.

 Suitable for all leather types—including absorbent and sensitive finishes like Nubuck and suede—Degreaser 2.2 is an essential tool for restoring and preserving leather’s natural beauty, softness, and longevity. 

 Leather Acidifier 2.0 by Leather Doctor® is a pH 2.0 acidic rinse designed to control, neutralize, and restore leather’s natural pH balance.

Acidifier 2.0 prevents leather from denaturing, which can lead to bleeding, streaking, tackiness, and structural weakness due to alkaline overexposure. 

 Acidifier 2.0 Key Benefits:

 Neutralizes alkaline contamination from cleaners, sweat, and body oils
 Prevents dye bleeding and color streaking
 Reduces leather tackiness and improves texture
 Strengthens leather fibers and enhances structural integrity 

 When to Use Acidifier 2.0:

 After exposure to alkaline products (alkaline cleaners, soap, ammonia, baking soda, saddle soap, dish detergent, etc.)
 To rectify tackiness, dullness, or streaking from alkaline overexposure
 To stabilize and restore the leather’s natural pH balance

Topcoat and Crosslinker system (Gloss 76 and Crosslinker 64):

 Bicast Finish Topcoat Gloss 76 by Leather Doctor®  is a water-based urethane-resin emulsion formulated as a sealer and refinishing topcoat for Bicast, bycast, and PU-coated leather. It offers excellent toughness, flexibility, and protection, ensuring a smooth, durable finish.

 Gloss 76 Key Benefits: 

 Restores and enhances the original glossy finish

 Improves durability and wear resistance

 Maintains flexibility to prevent cracking and peeling

 Water-based formula with excellent adhesion and toughness

 How to Rectify Sticky Bicast Finishes:

Bicast leather can become sticky due to body oils, sweat, and environmental exposure.

To prevent tackiness and increase water resistance, mix:

 Crosslinker 64 – Add 1: 95 ratio (2.5g per 8oz of Gloss 76)

Application Tips:

 Ensure surface is properly cleaned and prepped before application

 Apply evenly with Foam Brush 2 or airbrush for a consistent finish

 Allow sufficient drying and curing time for optimal durability

 Gloss 76 provides a long-lasting, non-tacky protective layer, keeping Bicast leather smooth, glossy, and resilient.

 Leather Crosslinker 64 by Leather Doctor® is a high-solid hardener designed to strengthen and toughen leather topcoats, particularly those that have become tacky or sticky over time.

It enhances durability, resistance, and performance while preventing water spotting and reoccurring stickiness.

 Crosslinker 64 Key Benefits: 

 Eliminates sticky topcoats – Prevents tackiness and enhances smoothness 

 Strengthens topcoat durability – Creates a tougher, long-lasting protective film

 Reduces water sensitivity – Ties up hydrophilic elements to prevent water spotting

 VOC-free formula – High-solid composition without harmful volatile organic compounds 

 How Crosslinker 64 Works:

When mixed into a water-based urethane topcoat, Crosslinker 64:

 Enhances adhesion and flexibility – Prevents cracking and peeling

 Increases resistance – Reduces damage from friction, wear, and environmental exposure

 Improves overall performance – Ensures a smooth, non-tacky finish for leather surfaces

 Ideal Applications:

 Bicast, bycast, and PU-coated leather

 Worn or deteriorating leather topcoats

 Fixing sticky leather finishes caused by body oils, sweat, and cleaning residues

 By adding Crosslinker 64 to topcoat refinishing systems, you achieve a resilient, long-lasting finish that resists stickiness, wear, and water damage.

Conditioning system (Protector B):

 Leather Protector B by Leather Doctor® is a pH 3.2 non-stick, rub-resistant conditioner that enhances smooth leather’s durability while providing a soft, buttery feel.

 Protector B Key Benefits:

 Increases Wet & Dry Rub Resistance – Reduces stretch, scuffing, and wear.
 Enhances Durability – Creates a protective barrier against everyday friction.
 Prevents Sticky Soiling – Keeps dirt and stains from embedding into the leather.
 Resists Ink & Dye Transfer – Makes ballpoint ink and dye stains easier to remove.
 Reduces Friction Noise – Creates a quieter, smoother touch.
 Impart a Non-Sticky Surface - Reduces surface tackiness.
 Maintains Leather’s Breathability – Preserves natural softness and flexibility.

 Protector B Plus:

 Protector B Plus offers all the benefits of Protector B with an added luxurious leather scent, making it an ideal choice for pastel leathers, helping them stay cleaner and stain-free for longer.

 Regular use of Protector B ensures long-term protection, a smooth feel, and a refreshed leather appearance, making maintenance easier while extending the leather’s lifespan.

 Tools:  

 Leather Brush 1 by Leather Doctor® is a detailing horsehair brush designed for gentle, scratch-free cleaning on all smooth leathers.

 Brush 1 Features & Benefits:

 Soft Horsehair Bristles – Ensures safe cleaning without scratching or damaging leather surfaces
 Ergonomic Grooved Grip – Provides comfort and control for effortless detailing
 Sturdy & Durable Design – Built for long-term use in leather maintenance
 Ideal for Deep Pore Cleaning – Effectively loosens embedded dirt and grime without harming the finish

Specifications:

          • Length: 7 inches
          • Bristle Head: Three-row 1½-inch horsehair bristles

Recommended Use:

          • Smooth Leather Upholstery & Car Interiors
          • Luxury Handbags & Garments
          • Fine Leather Accessories & Footwear

 Perfect for use with Leather Doctor’s leather-safe cleaners to maintain leather’s pristine condition.  

 Foam 2 is a 2-inch high-density polyfoam brush designed for durable, precise, and smooth application of leather care products. 

 Foam 2 Features & Benefits: 

 High-Density Polyfoam – Resists tearing and shredding for long-lasting use
 Even Product Distribution – Ensures smooth, streak-free application
 Controlled Absorption – Holds and releases product efficiently for optimal coverage
 Versatile Use – Ideal for applying dyes, finishes, and conditioners on leather and suede

Specifications:

          • Width: 2 inches
          • Material: High-density polyfoam

 Perfect for professional and DIY leather care applications, delivering a consistent and flawless finish.

   Towel 5 by Leather Doctor is a high-performance, lint-free paper towel designed to perform like cloth for efficient cleaning and drying without leaving residues 

  Towel 5 Features & Benefits:  

  Lint-Free – Leaves no fibers or residues behind
  Highly Absorbent – Quickly absorbed suspended soiling
  Stretchable & Durable – Strong enough for repeated use without tearing
  Washable & Reusable – Can be rinsed and reused for multiple applications

   Ideal For:

  Cleaning and drying leather surfaces
  Wiping away excess products like cleaners, conditioners, and protectors
  Achieving a streak-free and residue-free finish
  Perfect ensuring a smooth and effective leather care process.

  Leather Eraser 4 by Leather Doctor® is used on all leather, nubuck, and fine suede for dry and wet cleaning with better greasy and gummy soil traction.

      • It is also used in conjunction with Stripper 2.3 to strip off old and deteriorating finishes during refinishing.
      • Dimensions: (L: 2.8 inches x H: 2 inches x W: 0.2 inches)

 Sandpaper 2000 grit is recommended to remove refinishing streaks for in between coatings.

 Instruction: 

 Degreasing

      1. Degreaser 2.2 is shaken to gel before use. 
      2. It is transferred onto Foam 2, Brush 2, or Eraser 4 for better control before applying to the stain.
      3. It is brushed and suspended soiling extracted with a white absorbent towel changing folding sides until it shows clean, ready for acidifing rinse.

 Acidifying 

      1. Acidifier 2.0 concentrate 1: 25 is to be mixed with 218g distilled water or 1.5 inches from the top of the 8oz bottle before use.
      2. It is applied directly, brushed, and extracted with a towel until clean.
      3. It is kept for 3 to 30 minutes to neutralize and stabilize leather pH.
      4. Treatment is complete with a test for a healthy squeaky feel, ready for other processes.
 Topcoat Crosslinking
      1. Add 4oz ready-to-use Gloss 76 into the Crosslinker bottle.
      2. Add a little at a time while swirling to avoid seeding.
      3. Swirl well for 2-3 minutes to ensure proper mix.
      4. Allow the mixture to react for at least 30 minutes before using.
      5. This will ensure optimum catalyst reaction time and flow/leveling performance of the coating during application.
      6. This optimum catalyst reaction time ensures the flow and level performance of the coating during application
      7. The mix is transferred to the foam brush and applied in a light circular motion to avoid streaks.
      8. Blow dry to avoid streaking on subsequent coatings.
      9. Subsequent light touching coatings are applied until the desired gloss is achieved and let overnight for curing.
      10. Allow at least 48 hours for a complete curing before use.
      11. The average 3 coatings of 4oz Gloss 76 mix covers approximately 40 square feet.

 Conditioning

      1. Protector B concentrate is mixed with distilled water 1: 19 or 1.5 inches from top of the 8oz bottle before use.
      2. Shake well, mist spray, and spread with a brush/pad and it is ready to use when dry.
      3. During routine application, use a lint-free white towel to pick up soiling at the same time.

 Your opinions, insights and review are precious and will help us to improve our writing and solve your leather problem more efficiently. 

Updated: March 19, 2025, |June 24, 2025 by Roger Koh.

Reviews

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  • 5
    Excellent Product--Highly Recommend

    Posted by Bicast Leather Sticky Topcoat Refinishing Kit on 29th Dec 2023

    I've been searching for several years for a solution to my leather couch that became (sticky). I found loads of information online about "sticky" leather due to "sweets" being spilled on it (not helpful). This is the first company I found that clearly explains the problem and offers a solution. After carefully going through the 3 step process, my couch looks practically new! Totally worth the money and time/effort. And the company was also very helpful in answering questions via email and got back to me right away. One note: be sure to have some distilled water as 2 of the products require this to be added.

  • 4
    Great product, sofa is like new!

    Posted by Chris on 28th Jul 2015

    After about 8 years of use, my Natuzzi sofa became sticky on the seat cushions, to the point where it would transfer fibres from clothing onto the sofa. I tried contacting some local repair outfits and their response was that I would be better off buying a new sofa due to the nature of the bicast leather material. Their quotes for repair were around the $900 mark. Faced with a potentially unusable sofa, I did some research on the internet which led me to Leather Doctor and the Bicast Leather sticky topcoat kit. I placed the order and the kit arrived within days. I followed the preparation process, being careful to remove all of the fibres which were transferred to the sofa using degreaser and the 2000 grit sandpaper once the leather was dry. The acidifier made a huge difference in how the leather felt. No more stickiness! Finally, when the leather was once again dry, the urethane topcoat was applied. Be sure to apply this evenly to avoid streaking. It also darkens the colour of the leather slightly. Once the urethane was dry, the sofa looked nearly new, and the sticky problem solved. Final treatment was the the protector which gave a smooth feel to the leather, and also restores the original leather smell. One kit is enough for one 3-place sofa. I had a 3-place and a 2-place to refinish and the kit was only enough to do the seating surfaces and the fronts of both, but not the backs or the sides. Well worth the investment!