He was one of the four top fashion merchants alongside Rose Bertin, Madame Eloffe and Mademoiselle Alexandre during the reign of Louis XVI, and is described as the rival and predecessor of Rose Bertin as the leading fashion designer in France.
His most known clients were queen Marie Antoinette and Louis XV's mistress, Madame du Barry.
[4] Considering the enormous amount of money paid, it is not known whether this applied for styling her own hair or her wigs or both.
It is known that besides Rose Bertin, Le sieur Beaulard was among the following three top fashion merchants alongside Madame Eloffe and Mademoiselle Alexandre in the 1770s.
Beaulard was praised as "a modiste without parallel, the creator and the poet ... because of his myriad inventions and delicious names for fripperies".