I'm using only the best products available on the market....
Every piece is protected with semi - matt natural hard oilwaxes that are resistant to abrasion as well as dirt.
I chose hard oilwax that allow it to "breath" and also protect the material in natural way.

Water-repellent. Resistant to wine, beer, cola, coffee, tea, fruit juice, milk and water in accordance with German DIN 68861 - 1A - no water spots.
Finish is safe for humans, animals and plants(resistant to saliva and perspiration acc .German DIN 53160, suitable for children's toys acc. EN71.3