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:
- 1️⃣ Bicast Pro 1.5 – A pH 1.5 cleaner that removes body oils, sweat, and grease
- 2️⃣ Acidifier 2.0 – A pH 2.0 rinse that neutralizes alkalinity and prevents tackiness
- 3️⃣ 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:
1️⃣ Degreasing & Cleaning
- Degreaser 2.2 removes embedded oils and sweat
- Acidifier 2.0 pH balances and neutralizes sticky residues
- Eraser 4 removes surface buildup
2️⃣ Smoothing & Surface Prep
- Sandpaper (1000/2000 grit) smooths rough areas
3️⃣ Topcoat Refinishing
- Bicast Gloss Topcoat 76G – A water-based urethane gloss topcoat restores finish
- Crosslinker – A hardener additive that enhances durability and prevents stickiness
4️⃣ 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.
This Kit B7 contains concentrated products that require dilution with 0.47 quart (433g) of distilled water before use.
Degreasing and Acidifying Rinse system:
Leather Degreaser 2.2 by Leather Doctor is a professional-grade degreaser designed to remove body oil, grease, and sweat from leather surfaces, including headrests, armrests, collars, cuffs, handles, and steering wheels.
Formulated with a pH of 2.2, this water-based, leather-safe degreaser penetrates deep to lift embedded oils and grease while preventing dye bleeding. Unlike solvent-based products, it cleans effectively without drying out or damaging the leather.
Degreaser 2.2 is suitable for all leather types, including Nubuck and suede, making it an essential solution for maintaining and restoring leather’s natural beauty 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. It prevents leather from denaturing, which can lead to bleeding, streaking, tackiness, and structural weakness due to alkaline overexposure.
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 (incorrect cleaners, soap, ammonia, baking soda, etc.)
- To rectify tackiness, dullness, or streaking from alkaline overexposure
- To stabilize and restore the leather’s natural pH balance
Application Steps:
- 1️⃣ Clean and Rinse the surface using a leather-safe Cleaner 3.8 follows with Rinse 3.0
- 2️⃣ Apply Acidifier 2.0 with a towel or sponge, allowing it to penetrate
- 3️⃣ Gently extract excess residue with a clean absorbent towel
- 4️⃣ Follow up with Hydrator 3.3 and Fatliquor 5.0 for complete restoration
Acidifier 2.0 is essential for:
- ✅ Aniline, Vachetta, Nubuck, Suede, and Full-Grain Leathers
- ✅ Rectifying dye bleeding, tackiness, and alkaline damage
- ✅ Maintaining the longevity and durability of leather
This pH-balancing solution ensures your leather remains healthy, strong, and resistant to premature aging.
Topcoat and Crosslinker system:
Bicast Finish Topcoat Gloss 76
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.
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 Bicast 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
Bicast Finish Topcoat 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.
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 It 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 Leather Crosslinker 64 to topcoat refinishing systems, you achieve a resilient, long-lasting finish that resists stickiness, wear, and water damage.
Conditioning system:
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
- ✔ Maintains Leather’s Breathability – Preserves natural softness and flexibility
Protector B Plus offers all the benefits of Protector B with an added luxurious leather scent, making it an ideal choice for pastel-colored 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:
Brush 1 by Leather Doctor is a detailing horsehair brush designed for gentle, scratch-free cleaning on all smooth leathers
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
Foam 2
Foam 2 is a 2-inch high-density polyfoam brush designed for durable, precise, and smooth application of leather care products.
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
Towel 5
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
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.
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 used in conjunction with Degreaser 2.2 in the degreasing process.
- Dimensions: (L: 2.8 inches x H: 2 inches x W: 0.2 inches).
Sand 2000 is a 2000 grit sandpaper recommended to remove refinishing streaks for in between coatings.
Instruction:
1. Degreasing
- Degreaser 2.2 is shaken to gel before use.
- It is transferred onto Foam 2, Brush 2, or Eraser 4 for better control before applying to the stain.
- It is brushed and suspended soiling extracted with a white absorbent towel changing folding sides until it shows clean, ready for acidifing rinse.
2. Acidifying
- 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.
- It is applied directly, brushed, and extracted with a towel until clean.
- It is kept for 3 to 30 minutes to neutralize and stabilize leather pH.
- Treatment is complete with a test for a healthy squeaky feel, ready for other processes.
- Add 4oz ready-to-use Gloss 76 into the Crosslinker bottle.
- Add a little at a time while swirling to avoid seeding.
- Swirl well for 2-3 minutes to ensure proper mix.
- Allow the mixture to react for at least 30 minutes before using.
- This will ensure optimum catalyst reaction time and flow/leveling performance of the coating during application.
- This optimum catalyst reaction time ensures the flow and level performance of the coating during application
- The mix is transferred to the foam brush and applied in a light circular motion to avoid streaks.
- Blow dry to avoid streaking on subsequent coatings.
- Subsequent light touching coatings are applied until the desired gloss is achieved and let overnight for curing.
- Allow at least 48 hours for a complete curing before use.
- The average 3 coatings of 4oz Gloss 76 mix covers approximately 40 square feet.
4. Conditioning
- Protector B concentrate is mixed with distilled water 1: 19 or 1.5 inches from top of the 8oz bottle before use.
- Shake well, mist spray, and spread with a brush/pad and it is ready to use when dry.
- During routine application, use a lint-free white towel to pick up soiling at the same time.
Your opinions and insights are precious and will help us solve your leather problem more efficiently.
Updated: March 19, 2025, by Roger Koh.