A method of manufacture of an automotive light comprising the steps of: - providing a container body delimited by a first perimetral profile, - providing a lenticular body delimited by a second perimetral profile, - associating at least partially between each other the respective first and second perimetral profile (20,28) of the container body and the lenticular body, - welding at least partially between the lenticular body and the container body at said perimetral profiles (20,28), - providing at least one laser source emitting a light beam or radiation having a characteristic emission spectrum, - wherein the step of providing the lenticular body envisages that said lenticular body be obtained by means of a moulding technique so as to have a lenticular body comprising at least a first and a second layer (36, 40) at least partially overlapping and integral to each other, with said layers (36,40) having different transmittance values in relation to the emission spectrum of the laser source, - wherein the welding of the lenticular body on the container body is a laser welding, wherein the light beam emitted by the laser source is routed towards the perimetral profiles (20,28) so as to reach the first perimetral profile of the container body after passing through at least one of the layers (36,40) of the lenticular body having different transmittance values in relation to the emission spectrum of the laser source, - wherein the container body acts as an absorbing member in relation to the light beam and the lenticular body acts as a transmissive member of the light beam, wherein the light radiation emitted by the laser source passes through both the first layer and the second layer of the lenticular body before reaching the welding area positioned at an interface between the first and second perimetral profiles (20,28), wherein at least one of said layers (36,40) is made from a polymer material having a desired colour, wherein said layers (36,40) have a transmittance sufficient to not soften the material hit by the light beam and to transmit the light beam towards the perimetral profiles (20, 28) and towards the interface, characterized in that both of said layers (36,40) are able to be crossed by light emitted from a light source arranged inside the container body for realizing a light of the automotive light. - providing a container body delimited by a first perimetral profile, - providing a lenticular body delimited by a second perimetral profile, - associating at least partially between each other the respective first and second perimetral profile (20,28) of the container body and the lenticular body, - welding at least partially between the lenticular body and the container body at said perimetral profiles (20,28), - providing at least one laser source emitting a light beam or radiation having a characteristic emission spectrum, - wherein the step of providing the lenticular body envisages that said lenticular body be obtained by means of a moulding technique so as to have a lenticular body comprising at least a first and a second layer (36, 40) at least partially overlapping and integral to each other, with said layers (36,40) having different transmittance values in relation to the emission spectrum of the laser source, - wherein the welding of the lenticular body on the container body is a laser welding, wherein the light beam emitted by the laser source is routed towards the perimetral profiles (20,28) so as to reach the first perimetral profile of the container body after passing through at least one of the layers (36,40) of the lenticular body having different transmittance values in relation to the emission spectrum of the laser source, - wherein the container body acts as an absorbing member in relation to the light beam and the lenticular body acts as a transmissive member of the light beam,