Craquelure determined in the initial phases of the life of the pictorial film and originating from internal chemical variations that create contractions in the material, provoking large and irregular fragmented lines. The phenomenon is usually found in paintings where there was an inappropriate use of methods and materials, as in the case of the application of a layer of paint less flexible than the underneath layer, or of the application of a shiny and non-absorbent surface, or more in general, when one of the primary rules painting is overlooked: fat over lean. This type of craquelure is also observed when methods and materials were utilized that have an accelerated drying time for the layers.