[header] How to write a product review [title] Research the product. [step] In order to demonstrate to your readers that your review is reliable, make sure to conduct as much research as possible before you begin writing. A thorough knowledge of the product, its evolution and its competition will allow you to write something approaching an expert review. 
[substeps] Read the manufacturer's website, as well as any manufacturer information included with the product you are reviewing. Beware of publicity material released by manufacturers and retailers-readers will often stop reading if they sense that publicity material is being used rather than observations drawn from real-life experience.