Encaustic is a very ancient technic that was used by the Egyptians in 400 BC. Laberge makes her own paint using beeswax, tree resin and pigments. Encaustic is the medium that is best preserved over the years, being completely waterproof, resistant to bacteria mold and insects. Fayum's portraits made with this technique went through more than 2000 years without cracking or losing their luster!
Encaustic paintings should not be subjected to extreme heat but still tolerate heat very well. They are more sensitive to cold. It is therefore necessary to be vigilant when transporting the works to protect them against frost which could make them crack.
After a while, some oxidation of the board surface may occur. We just advise you to polish the surface of the painting with a soft cloth which will restore all the original brightness of your painting!