Over the years, some have expressed concern over the significant swings in color observed in bottles of the alkyd-based medium, Liquin. These color changes can occur for a number of reasons. Here are a few worth noting:
1. Oxidation
- Liquin is an alkyd-based medium, which means it contains resins that can react with oxygen over time. When exposed to air, the medium begins to oxidize, causing it to yellow or darken inside the bottle.
2. Aging of Resins
- Alkyd resins, like those in Liquin, naturally change color as they age. This aging process can cause the medium to become more amber in hue, even when stored in a sealed container.
3. Exposure to Light
- Liquin can also change color when exposed to light, especially UV light. Prolonged exposure can cause the medium to darken or yellow, particularly if the bottle is transparent or not stored in a dark place.
4. Contaminants
- Over time, small contaminants, like dust or particles, can find their way into the bottle, which may contribute to the color change. These particles can oxidize or react with the medium, leading to discoloration.
5. Heat Exposure
- Storing Liquin in a warm environment can accelerate the oxidation and aging of the resins, leading to faster yellowing or darkening.
Will It Affect Paintings?
While Liquin may change color in the bottle, it generally doesn’t affect the colors of your painting once applied, as it tends to dry clear. However, if it becomes significantly darkened, it’s a good idea to test it before use to ensure it doesn’t alter the tones of your paint.
As always, try to research your materials prior to use!
Happy Painting!