OIL PAINTING: La Loge, 1874
Renoir painting are examined with a microscope and it is clear, that Renoir used white and scarlet colors when he applied undercoating. After that process, Renoir used transparent red and blue colors in an apparent bid to promote color imaging.
In contemporary makeup methods, people often use blue and red powder over foundation cream , just like Renoir did to make the skin look transparent and beautiful.