There is provided a method of manufacture of a hair brush. The method has the steps, in the sequence of, i) forming a base layer in the form of a mesh by way of a first molding step, the base layer defining an upper surface and a lower surface opposite the upper surface, made of a first material selected from a group consisting of polypropylene (PP), nylon, polyoxymethylene (POM) and thermoplastic elastomer (TPE), and including a plurality of recesses with apertures at the upper surface, ii) forming a substrate layer for supporting bristles of the hair brush by a second molding step of overmoulding a finishing layer over the base layer, the finishing layer made of a second material; iii) installing the bristles to the substrate layer at the recesses through the apertures; and iv) assembling the substrate layer installed with the bristles to a casing of the hair brush.