Find out why the "Flowers in Blue Vase" by Van Gogh darkened

[zarajara]

Сообщение от NATA NOVA

Koroche , ladies and gentlemen artists no further - driers (ie everything has to dry naturally) . I understood correctly ? Lucky ( and paint pigments ) only natural ( old ) with no bullshit ..

Nat , are you more old dark, nothing but time does not stand exp .
By the way , well kept waxy coating type wax, one friend gave me a jar of homemade - the shore, and I do not know the recipe , but the smell of pine needles.
 Only one negative , embossed surface wipe that composition is difficult.

[Seriy]

Сообщение от NATA NOVA

I have read a dozen times but did not understand ...

In driers for painting the active substance, cobalt salts.