Interior design is the art and science of enhancing the interior of a space to achieve a healthier and more aesthetically pleasing environment for the people using it. Interior designers work to create functional and attractive spaces by selecting appropriate color schemes, furniture, lighting, and decor. They also consider spatial relationships, traffic flow, and ergonomic factors to optimize the functionality of a space. Interior design often involves collaborating with architects, engineers, and other professionals to ensure that the design meets the needs and preferences of the client.