His famous portrait of Alice Sèthe (1888) in blue and gold would become a turning point in his life.
This time he used merely points in the portrait.
She would later marry the sculptor Paul Dubois.
Her sister, Maria Sèthe, also a model of van Rysselberghe, would marry the renowned Art Nouveau architect Henry Van de Velde.
In that period he made many Neo-impressionistic portraits, such as the portrait of his wife Maria and their daughter Elisabeth.
He had married Marie Monnom in 1889.
They went on their honeymoon to the south of England and then to Brittany.
This would also result in a number of Neo-impressionistic paintings.
In Paris he had a meeting with Theo Van Gogh and managed thus to invite Vincent van Gogh to the next exhibition in Brussels.
That is where Van Gogh sold Vigne Rouge in Montmajour to Anna Boch, the only painting he ever sold.

Apart from the portraits, he also painted in this period many landscapes and seascapes : "Dunes in Cadzand" (1893), "The rainbow" (1894).

In the 1895 he made long journeys to Athens and Constantinople, Hungary, Romania, Moscow and Saint Petersburg in order to make posters for the "Compagnie des Wagons-lits".
One famous work is the poster "Royal Palace Hotel, Ostende" (1899).

In 1897, van Rysselberghe moved to Paris.
Along with Paul Signac, Maximilien Luce, Aristide Delannoy, Alexandre Steinlen, Camille Pissarro, Van Dongen, George Willaume, etc.,
he contributed to the anarchist magazine Temps Nouveaux.

In the final years of the 1890s, Théo van Rysselberghe had reached the climax of his Neo-impressionist technique.
Slowly he abandoned the use of dots in his portraits and landscapes and began applying somewhat broader strokes : The hippodrome at Boulogne-sur-Mer (1900) and the group portrait Summer afternoon (1900), Young women on the beach (1901), Young girl with straw bonnet (1901), and The Reading (1903) (with the contrast between red and blue colours).

After all his years as talent scout for Octave Maus, van Rysselberghe made the mistake of his life: he didn't recognize the talent of the young Pablo Picasso (who was in his Blue Period at that time).
He found his works "ugly and uninteresting".
His famous portrait of Alice Sèthe (1888) in blue and gold would become a turning point in his life. This time he used merely points in the portrait. She would later marry the sculptor Paul Dubois. Her sister, Maria Sèthe, also a model of van Rysselberghe, would marry the renowned Art Nouveau architect Henry Van de Velde. In that period he made many Neo-impressionistic portraits, such as the portrait of his wife Maria and their daughter Elisabeth. He had married Marie Monnom in 1889. They went on their honeymoon to the south of England and then to Brittany. This would also result in a number of Neo-impressionistic paintings. In Paris he had a meeting with Theo Van Gogh and managed thus to invite Vincent van Gogh to the next exhibition in Brussels. That is where Van Gogh sold Vigne Rouge in Montmajour to Anna Boch, the only painting he ever sold.
Apart from the portraits, he also painted in this period many landscapes and seascapes : "Dunes in Cadzand" (1893), "The rainbow" (1894).
In the 1895 he made long journeys to Athens and Constantinople, Hungary, Romania, Moscow and Saint Petersburg in order to make posters for the "Compagnie des Wagons-lits". One famous work is the poster "Royal Palace Hotel, Ostende" (1899).
In 1897, van Rysselberghe moved to Paris. Along with Paul Signac, Maximilien Luce, Aristide Delannoy, Alexandre Steinlen, Camille Pissarro, Van Dongen, George Willaume, etc., he contributed to the anarchist magazine Temps Nouveaux.
In the final years of the 1890s, Théo van Rysselberghe had reached the climax of his Neo-impressionist technique. Slowly he abandoned the use of dots in his portraits and landscapes and began applying somewhat broader strokes : The hippodrome at Boulogne-sur-Mer (1900) and the group portrait Summer afternoon (1900), Young women on the beach (1901), Young girl with straw bonnet (1901), and The Reading (1903) (with the contrast between red and blue colours).
After all his years as talent scout for Octave Maus, van Rysselberghe made the mistake of his life: he didn't recognize the talent of the young Pablo Picasso (who was in his Blue Period at that time). He found his works "ugly and uninteresting".
Théo van Rysselberghe