[2][3] Several distinguishing trends are identified within the movement such as lyrical abstraction, matter painting, New Paris School, tachisme and art brut.
Within this tendency, each artist allows full freedom of expression to the unforeseen quality of materials (a taste for stains or chance) and randomness of gestures, thus rejecting drawing and control and the traditional conception of painting and its development that evolves from the idea to the completed work via sketches and projects.
Plastic characteristics of this painting are: spontaneity of the gesture, automatism, expressive use of material, the nonexistence of preconceived ideas, the experience that the deed generates the idea, and the work is the place and the privileged moment whereby the artist discovers himself; it is the end of the reproduction of the object for the representation of the theme that becomes the end of the painting, with a sometime calligraphic aspect, referring to a Calligraphic Abstraction in relation to the works of Georges Mathieu, Hans Hartung, or Pierre Soulages.
[4] They used art to represent their support for the shift away from dictatorship during these times of extreme political turbulence in their country.
Artists were inspired by European paintings, as well as American expressionism, while using automatism as their way of conveying this new style of art.