A process for producing, applying and fixing a multilayer surface coating (2a, 3a, 4a) to at least one surface to be coated, of a host substrate, characterized in that it consists in applying successively: - a layer of fixing product, called the fixing layer, directly to the or each surface to be coated of the host substrate by covering the latter, the surface interaction between the latter achieving their fixing to each other, - a layer, of functional product, called the functional layer, directly to the fixing layer by covering the latter, the surface interaction between the latter effecting their fixing to each other and thus the fixing of the functional layer to the or each surface to be coated of the host substrate by means of the fixing layer, said functional product being applied to the fixing layer by spraying, projecting or spreading, wherein, said functional product being in liquid form and comprising monolayer or multilayer graphene at a concentration greater than or equal to 0.2g/L and at least one surfactant dispersed in water, in a hydroalcoholic solution or in a solvent, said fixing product being capable of being applied and fixed directly onto the or each surface to be coated, of the host substrate by surface interaction between said fixing product and said surface to be coated, and said functional product being capable of being applied and fixed directly to the fixing product by surface interaction between said functional product and said fixing product. characterized in that it consists in applying successively: - a layer of fixing product, called the fixing layer, directly to the or each surface to be coated of the host substrate by covering the latter, the surface interaction between the latter achieving their fixing to each other, - a layer, of functional product, called the functional layer, directly to the fixing layer by covering the latter, the surface interaction between the latter effecting their fixing to each other and thus the fixing of the functional layer to the or each surface to be coated of the host substrate by means of the fixing layer, said functional product being applied to the fixing layer by spraying, projecting or spreading, - a layer of fixing product, called the fixing layer, directly to the or each surface to be coated of the host substrate by covering the latter, the surface interaction between the latter achieving their fixing to each other, - a layer, of functional product, called the functional layer, directly to the fixing layer by covering the latter, the surface interaction between the latter effecting their fixing to each other and thus the fixing of the functional layer to the or each surface to be coated of the host substrate by means of the fixing layer, said functional product being applied to the fixing layer by spraying, projecting or spreading, wherein, said functional product being in liquid form and comprising monolayer or multilayer graphene at a concentration greater than or equal to 0.2g/L and at least one surfactant dispersed in water, in a hydroalcoholic solution or in a solvent, said fixing product being capable of being applied and fixed directly onto the or each surface to be coated, of the host substrate by surface interaction between said fixing product and said surface to be coated, and said functional product being capable of being applied and fixed directly to the fixing product by surface interaction between said functional product and said fixing product.