Abstract: A method and apparatus for creation of a decor on hollow axially symmetrical products is primarily useful in the glass industry. A laser beam acts from the interior of a hollow twin layer product through an internal sufficiently permeable layer to an external highly absorbent layer in order to cause a phase change of the external layer. The apparatus includes a laser, a lens, a mirror situated on the axis of symmetry of the product and also drives for translational movement of the lens and of the mirror and for a rotational movement of the mirror, controlled by a microcomputer or an optical pick-up device with a sample of the decor. A laser beam with a wavelength of the spectrum between 0.5 to 2.0 .mu.m is best suited for this purpose.