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ProNature Hardwood Lye

SKU: PN148


Lighten and Brighten with Lye

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Give your hardwood floors a fresh, new look with ProNature Hardwood Lye. This lightly pigmented lye is perfect for preliminary treatment and lightening of new, sanded, solid hardwood floors before treating with ProNature Plant Soap Concentrate white. Create a brighter and more inviting space. ProNature Hardwood Lye is easy to use and non-toxic, making it a safe and sustainable choice for your home. It also helps to open the wood grain, making it more receptive to ProNature Plant Soap Concentrate white, resulting in a more even and beautiful finish.

Additional information

Weight 1.5 kg


Coverage & Application


  • Approximately 9-14 m² per litre per coat, depending on the type of wood.

Surface Preparation:

  • Preliminary spot-testing is urgently advised!
  • NB: Due to the acidic reaction of the product, colour changes of the treated timber surfaces take place and can differ even for the same kind of timber.
  • Before treatment, round the edges, clean the substrate, sand finely (grit 120 or finer).
  • Completely remove sanding dust, preferably with a vacuum cleaner.
  • Wash resin-rich knots with ProNature Metal and Glass Cleaner to remove all sticky residues.

1st Application:

  • Ready to use
  • Cover all surrounding surfaces – ProNature Hard Wood Lye is corrosive!
  • Wear rubber gloves and goggles.
  • Only use non-corrosive and acid resistant applicators and containers like plastic or stainless steel!
  • Stir product well before use and apply uniformly to saturation in the grain direction using an acid resistant tool.
  • NB: Do not pour directly onto the substrate.
  • Stir the lye frequently during processing.
  • Remove any excess.
  • Dry thoroughly providing adequate ventilation
  • Treated surfaces must be completely dry before use

2nd Application / Further Treatment:

  • Once completely dry, lightly sand surfaces (grit 180-220) to obtain high quality surfaces.
  • Wear dust protection while removing sanding dust
  • Treat with ProNature Plant Soap White; (see corresponding Technical Data Sheet).
  • NB: Do not use alternative product as unsuitable soaps could produce discoloration.


ProNature Hard Wood Lye by sealing the lye treated surface with ProNature Indoor Natural Light or a higher grade of white i.e., 20, 30, etc.

Storage/Shelf life:

Store in a cool, dry place. Minimum stability 2 years in closed container.


Please recyle container.

Cleaning & Maintenance

Clean with ProNature Plant Soap White; (see corresponding Technical Data Sheet).

NB: Do not use alternative product as unsuitable soaps could produce discoloration.

Safety & Warnings


  • Natural ingredients may cause allergies. Use only as directed. Keep out of reach of children.
  • The product is acidic, similar to lemon juice and irritates eyes and skin.
  • Avoid inhaling dust.
  • Avoid contact with the skin and eyes.
  • After accidental skin contacts wash off with water.
  • After accidental eye contact rinse immediately with plenty of water and consult a doctor.

General: The information given is intended as a guideline only. Since this product is used outside of our control, ProNature cannot be held liable for any loss or damage whatsoever relating to the application or surface it is applied to. We reserve the right to change specifications at any time and without prior notice.

Product Brochure

ProNature TDS – PN148 – ProNature Hardwood Lye

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