What kind of materials did Andrew wyeth use?

Andrew Wyeth primarily used tempera paint, a medium known for its vibrant colors and fine detail, which he often applied in layers to create texture and depth. He also worked with watercolor and graphite for sketches and studies. His choice of materials contributed to the realism and emotional depth characteristic of his artwork. Additionally, he often employed a technique called "drybrush" to achieve a unique softness and subtlety in his paintings.