How did Frans Hals’s painting style change as he grew older?

Frans Hals’s painting style evolved significantly throughout his life, moving from the jovial, colorful works of his youth toward a more somber, free, and psychologically profound approach in his later years.12

As he aged, his technique became increasingly loose, eventually mirroring the freedom of Impressionism. While his early works were characterized by "loud mirth," his middle-age portraits began to exhibit a sense of foreboding and a knowing sadness. By his final years, his palette lost much of its former luster, relying on a sophisticated range of blacks and whites.12

In his old age, Hals abandoned complex, tightly articulated compositions in favor of greater simplicity. His brushwork became more liberated, capturing fleeting motions and "nervous twitches" rather than static poses. Despite the personal and financial hardships he faced, his late works—such as the portraits of the regents of the Haarlem almshouse—are considered his masterpieces, reflecting a shift from youthful exuberance to a deep, spiritual, and compassionate observation of human character and destiny.21