Jean-Baptiste Perronneau was a French painter who specialized in portraits executed in pastels.
Bernard-Antoine Nicolet [fr] after Charles-Nicolas Cochin, J. B. Peronneau, etching, Beaux-Arts de Paris
Jean-Baptiste Perronneau, Madame de Sorquainville, 1749
J. B. Perronneau, old fashioned silhoutte style by Carlos Fuentes y Espinosa.
A pastel is an art medium that consist of powdered pigment and a binder. It can exist in a variety of forms, including a stick, a square, a pebble, or a pan of color, though other forms are possible. The pigments used in pastels are similar to those used to produce some other colored visual arts media, such as oil paints; the binder is of a neutral hue and low saturation. The color effect of pastels is closer to the natural dry pigments than that of any other process.
Leon Dabo, Flowers in a Green Vase, c. 1910s, pastel
Commercial oil pastels
Scenery painter in Schlosspark Charlottenburg, Berlin
A pastel frottage created by rubbing pastel on paper laid over stone