Leather Casein Additive

$29.10

Estimated delivery between December 10 and December 14. Order within .

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$29.10

Product description
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Key Benefits
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LEATHER CASEIN ADDITIVE — LETECH EXPERT LINE

 

Polyurethane-modified casein additive designed to improve elasticity, adhesion and durability in leather finishing systems. Ideal for footwear, apparel and leather goods.

 


 

Signature Advantages

 

Enhanced elasticity and flexibility — maintains natural leather movement without cracking

Improved adhesion — strengthens bonding within finishing systems for longer-lasting results

High wear and abrasion resistance — supports heavy-use leather applications

Moisture- and chemical-resistant film that outperforms traditional casein coatings

Breathable dispersion layer that supports vapor exchange and prevents over-sealing

Stable, uniform film formation for cleaner visual blending and improved surface quality

 


 

Created for Professionals

 

• Footwear finishing and leather apparel production

• Leather goods manufacturing and accessory finishing

• Restoration studios working with premium leather surfaces

• Workshops requiring durable, breathable finishing solutions at scale

 


 

Compatible Leather Types

 

Suitable for finished and pigmented leather, as well as coated PU/artificial leather surfaces.

Not suitable for suede or nubuck. Always perform a patch test on an inconspicuous area.

 


 

Refined Result

 

A resilient, well-formed, breathable finishing film that adds strength, adhesion and resistance to coatings while preserving the natural aesthetic and tactile properties of the leather.

 


 

Application Notes

 

Use as an additive in finishing or top-coat systems.

Mix thoroughly before application. Apply using standard spray or finishing equipment according to your coating workflow.

Allow proper curing time for best performance.

Always follow manufacturer instructions and test product suitability prior to full-scale use.

Application of Leather Casein Additive in Leather Finishing Systems

1. Preparation

• Shake or mix the additive thoroughly before use

• Ensure the surface is clean and free from oils, silicones or contaminants

• Always perform a small spot test on an inconspicuous area

2. Mixing Ratio

For most finishing systems:

• Add 10–15% Leather Casein Additive to the total volume of Leather Top Coat

• Add 5–10% Cross-Linker X to increase chemical and mechanical resistance

• Adjust viscosity using Leather Thickening Agent if required

3. Application Method

• Apply only in the final finishing stage after recoloring and repairs

• Spray using an airbrush or spray gun for best uniformity

• Avoid over-application — excessive film thickness may alter color tone or increase stiffness

4. Drying and Curing

• Initial drying: 2–3 hours depending on temperature and humidity

• Full curing: 8–12 hours for complete cross-linking and moisture resistance

• Do not expose the leather to cleaning agents during the first 7 days

5. Recommended Use Cases

• Leather footwear and apparel

• Leather goods and accessories

• Professional restoration projects requiring breathable, durable finishes

(Not suitable for suede or nubuck.)

6. Compatibility

The additive is part of the LeTech Expert Line finishing system and works perfectly with:

• Leather Top Coat (all gloss levels)

• Leather Slip Additive

• Leather Wax-Effect Additive

• X-Guard Additive

• Leather Thickening Agent

LeTech Academy (LeCademy+) provides full training support for professionals using advanced finishing systems.

Leather Casein Additive — Expert Line

Exceptional adhesion to leather fibers — casein is naturally compatible with collagen, ensuring strong, long-lasting bonding

Stable, breathable dispersion film that improves vapor, moisture and air exchange without sealing the leather

High flexibility and elasticity — prevents cracking and preserves natural movement of the leather

Superior wear, friction and abrasion resistance for heavy-duty applications

Excellent resistance to water, sweat and aggressive environments after curing

UV-stable performance — prevents color shift and protects against external factors

Improved finish quality — supports polishing, buffing and gloss control

Environmentally safe composition — compliant with modern leather finishing standards

Orders ship from our California distribution center. We deliver across the United States, as well as to Canada and Mexico.

Instructions — How delivery works
  1. Place your order on {{ shop.name }} and complete payment at checkout.
  2. Processing time: 1–2 business days after payment confirmation.
  3. Shipping options: Standard (3–7 business days) or Express (1–3 business days).
  4. Tracking: you’ll receive a tracking email as soon as your parcel ships.
  5. Delivery: signature may be required for high-value orders at the carrier’s discretion.

Tip: please provide a complete and secure delivery address. We aren’t responsible for carrier delays, address errors, or severe weather.

Shipping Policy

From: California, USA · To: 50 US states (incl. Alaska, Hawaii, Puerto Rico), Canada, and Mexico.

Carriers: USPS, UPS, FedEx, DHL (and selected regional partners).

  • Processing: 1–2 business days after payment.
  • Standard: 3–7 business days · Express: 1–3 business days.
  • Tracking: emailed when your order ships.
  • International (CA/MX): transit times and costs vary; any customs duties or taxes are paid by the recipient.
Return & Refund Policy
  • Return window: within 14 calendar days of delivery.
  • Condition: items must be unused, unopened, and in original packaging.
  • Opened/used chemical products are not eligible for return due to safety/hygiene regulations.
  • No exchanges: we currently do not offer product exchanges.
  • Return shipping: paid by the customer (use a trackable method).
  • Refund timing: up to 30 days after inspection, to the original payment method.

If your order arrives damaged or incorrect, contact us within 48 hours at support@letech.us with photos and your order number. We’ll arrange a replacement or a full refund at no cost to you.

Payment & Billing
  • Accepted methods: Visa, MasterCard, American Express, Discover, PayPal, Apple Pay, Google Pay, Shop Pay.
  • Security: payments processed via PCI-DSS compliant gateways; we do not store full card details.
  • Taxes: calculated at checkout per applicable state/local laws.
  • COD (Cash on Delivery): not available.
Need help?

Contact LeTech USA Support

Questions about shipping, returns, or payments — we’re here to help.

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Logo of Craft Line with a工人 holding tools on a white background
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LeTech care & restoration logo with orange and black text
Logo of Craft Line with a工人 holding tools on a white background
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Logo of Craft Line with a工人 holding tools on a white background
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LeTech care & restoration logo with orange and black text
Logo of Craft Line with a工人 holding tools on a white background
Logo with 'EXPERT LINE' text in black and orange on a white background
Logo of Bag & Shoes spa with a stylized bag and shoes figure on a white background.
Logo of Le Meilleur on a white background
LeTech care & restoration logo with orange and black text
Logo of Craft Line with a工人 holding tools on a white background
Logo with 'EXPERT LINE' text in black and orange on a white background
Logo of Bag & Shoes spa with a stylized bag and shoes figure on a white background.
Logo of Le Meilleur on a white background
LeTech care & restoration logo with orange and black text
Logo of Craft Line with a工人 holding tools on a white background
Logo with 'EXPERT LINE' text in black and orange on a white background
Logo of Bag & Shoes spa with a stylized bag and shoes figure on a white background.
Logo of Le Meilleur on a white background
LeTech care & restoration logo with orange and black text
Logo of Craft Line with a工人 holding tools on a white background
Logo with 'EXPERT LINE' text in black and orange on a white background
Logo of Bag & Shoes spa with a stylized bag and shoes figure on a white background.
Logo of Le Meilleur on a white background
LeTech care & restoration logo with orange and black text
Logo of Craft Line with a工人 holding tools on a white background
Logo with 'EXPERT LINE' text in black and orange on a white background
Logo of Bag & Shoes spa with a stylized bag and shoes figure on a white background.
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