User research is significant in product design as it provides insights into the needs, behaviors, and preferences of end-users. This research informs every stage of the design process, from ideation to prototyping and testing. Understanding user needs ensures that products are not only aesthetically pleasing but also functional and usable, enhancing overall user satisfaction. Techniques such as surveys, interviews, and usability testing reveal pain points that can be addressed to improve the product. Ultimately, prioritizing user research leads to more successful products and fosters customer loyalty.