http://www.kunsthaus.ch/en/the-collection/conservation/examples-from-the-world-of-art-conservation/cross-section-of-the-paint-layer/cross-section-of-the-paint-layer/?redirect_url=title%3DCommunique%D0%201c%C2%A9s

Kunsthaus Zürich

Ferdinand Hodler

Cross-section of the paint layer

6. Pink overpainting with Raffaëlli sticks
5. Background, pink layer
4. Blue contour lines
3. Background underpainting
2. Flesh tones
1. Yellowish underpainting

Cross-section P2  at 10x magnification
Cross-section P2 at 10x magnification