The darkening of the color of the oil painting brush after cleaning might be caused by the following reasons:
Incomplete cleaning: The residual paint on the oil painting brush was not completely cleaned off, resulting in color residue and deepening.
Pigment penetration: Some pigments may penetrate into the interior of the bristles. After cleaning, the surface color fades, but the internal color remains, making the bristles appear darker in color.
Bristle material issue: Some synthetic bristles may show color changes after cleaning, but this is usually not due to paint residue but rather the inherent properties of the material itself.
To address the issue of the color darkening after cleaning the oil painting brush, the following solutions can be attempted:
Re-clean:
Wash the oil painting brush again with warm water and mild soap (such as laundry soap or pen soap).
Make sure the paint on the bristles is thoroughly cleaned. You can rinse them several times until the water becomes clear.
After cleaning, gently dry the bristles with a paper towel or towel to avoid deformation caused by excessive squeezing.
Use dedicated cleaning agent:
If ordinary soap fails to clean it thoroughly, you can consider using a special oil painting brush cleaner.
These cleaning agents can usually remove the pigment residue on the bristles more effectively.
Check the material of the bristles:
If the bristles are made of synthetic materials and the color changes significantly after cleaning, it might be a problem with the material itself.
In this case, it might be necessary to consider replacing the oil painting brushes with natural materials such as wool or pig bristles.
Prevent future color darkening:
When using an oil brush, try to avoid using too much thinner to prevent the paint from being too thin and difficult to clean.
After the painting is completed, clean the oil painting brush in time to prevent the paint from drying and adhering to the bristles.
Replace the old oil painting brushes regularly to keep the painting tools in good condition.
If the color of the oil brush still darkens after the above attempts and affects the painting effect, it may be necessary to consider replacing it with a new oil brush. When choosing a new oil brush, pay attention to selecting a product with reliable quality and excellent materials to ensure the smooth progress of the painting process.