What happened to Grumbacher pastels?

Grumbacher pastels, once a popular choice among artists, underwent changes in production and ownership over the years. The brand was acquired by the Chartpak company, which led to shifts in their product line and availability. As a result, some artists noticed differences in quality and formulation, leading to a decline in the brand's prominence in the art supply market. Today, while Grumbacher still produces art supplies, their pastels are not as widely recognized or used as they once were.