OW Siccative is a balanced formulation of siccatives for luthiers who make or use their varnishes without siccatives. It is designed to be added to linseed and walnut oils, traditional components of string instrument varnishes.

It provides homogeneous drying “from the bottom to the top” regardless of the thickness of the applied varnish coating, which helps develop and enhance the tenacity and suppleness of the coating, avoiding tensions and optimising the drying time to the utmost.

It is easy and fast to add to the varnish. OldWood varnishes have incorporated the siccative.

Safety Data Sheet and Classification

Please read the Material Safety Data Sheet (MSDS).

18031 (EN) OW Siccative (V3)

Classification and Security

Application Guidelines

These are short, general indications. For more detailed instructions, please download the Technical Data Sheet available for this product.


The recommended dosage is 5ml or gr.  (1 ml equals approx . to 40 drops) of OW – Siccative per each 100 ml  or gr.  of oil in the varnish.

It is recommended that OW Siccative be added to the solvent used for viscosity adjustment. This guarantees a complete, fast, and effective dilution of the drier in the varnish.


It’s crucial to remember that total drying time depends on the quantity of oil included in the varnish, the film thickness, the environmental conditions of humidity and temperature, and the intensity of radiation type (solar vs UV).

Security and Storage



According to Regulation No 1272/2008 (CLP), this product is not a hazardous substance or mixture for health or the environment.

Protective gloves against minor hazards and panoramic goggles against splashes and/or projections are recommended to prevent eye or skin contact.



Store it in its original container, tightly closed and cool, and do not expose it to direct light or outdoor elements. Avoid heat, radiation and static electricity.

Under standard conditions, the OW Siccative is stable for over two years.

More Resources

Safety Data Sheet

Technical Data Sheet