Co-branding involves the collaboration of two or more established brands into a joint product or marketing effort, aiming to drive sales and reach new consumers while potentially risking brand equity dilution. Examples include Gillette's combined promotion of its shaving products and the successful partnership between Apple and Nike with the Nike + iPod sport kit. Ingredient branding is a specific case where a component brand, like 'Intel Inside', enhances the value of the host product by establishing its own brand equity.