Vehicle light comprising - a container body that delimits a containment seat that houses at least one light source suitable to emit, when electrically powered, a plurality of light rays (Ri) defining a light beam to propagate outside of the vehicle light , - a lenticular body , that partially closes the containment seat and is suitable to be crossed by said light beam produced by the light source , - a light guide facing, in correspondence of a light inlet wall , to said at least one light source , so as to receive the light beam from this and transmit it to a light outlet wall , facing the lenticular body , - wherein the light guide comprises a body having a prevailing longitudinal extension (L) that defines the propagation direction of the light beam inside the body by total internal reflection, a first and a second side wall substantially parallel to said prevailing longitudinal extension (L), wherein - the body has a first groove , which extends from the first to the second side wall , the first groove comprising a plurality of first holes , defining cylindrical or spherical optics suitable to realize cylindrical or spherical caustics that produce, through successive refractions, a scattering of said light rays (Ri) towards the light outlet wall so as to emit a light beam with opalescent effect, wherein said first holes are adjacent to each other without interruption, so to define the first groove , wherein said first holes of the first groove are blind with respect to a thickness of the body of the light guide , penetrating from a first face of the body for a first depth less than said thickness . - a container body that delimits a containment seat that houses at least one light source suitable to emit, when electrically powered, a plurality of light rays (Ri) defining a light beam to propagate outside of the vehicle light , - a lenticular body , that partially closes the containment seat and is suitable to be crossed by said light beam produced by the light source , - a light guide facing, in correspondence of a light inlet wall , to said at least one light source , so as to receive the light beam from this and transmit it to a light outlet wall , facing the lenticular body , - wherein the light guide comprises a body having a prevailing longitudinal extension (L) that defines the propagation direction of the light beam inside the body by total internal reflection, a first and a second side wall substantially parallel to said prevailing longitudinal extension (L), wherein - the body has a first groove , which extends from the first to the second side wall , the first groove comprising a plurality of first holes , defining cylindrical or spherical optics suitable to realize cylindrical or spherical caustics that produce, through successive refractions, a scattering of said light rays (Ri) towards the light outlet wall so as to emit a light beam with opalescent effect, wherein said first holes are adjacent to each other without interruption, so to define the first groove , wherein said first holes of the first groove are blind with respect to a thickness of the body of the light guide , penetrating from a first face of the body for a first depth less than said thickness . <EOS>