Lighting is fundamental in the world of retail. It's not a coincidence that Thomas Edison, one of the fathers of modern electric lighting, once said, "There is no substitute for hard work." Lighting is one of the hardest but most rewarding elements of any retail project. Not only does it help define the look and atmosphere of the store, but it can also significantly influence customer behavior. Light can play a crucial role in guiding customers through the store and highlighting products. It can create a welcoming atmosphere that encourages customers to spend more time in the store, thereby increasing the chances of making purchases. Good lighting can also affect customers' moods, making them more open to making purchases. Another critical aspect of lighting in retail is color rendering. This term refers to a light source's ability to accurately reveal the colors of various illuminated objects. High color rendering can make colors and textures of products stand out, making them more appealing to customers. Conversely, low color rendering can distort colors and make products less attractive. A famous quote by Leonardo da Vinci says, "Light is the hand that touches and colors everything in the world," and in the world of retail, it's crucial that this "hand" is as faithful as possible. Illuminance values and the management of light flows with specific optics are other crucial aspects of retail lighting. Adequate illuminance can highlight specific products or areas of the store, helping to draw customers' attention. The use of specific optics can control the direction and spread of light, providing additional opportunities to highlight specific products or areas. Lighting design with Dialux is another essential tool for optimizing retail lighting. This software allows for the simulation and analysis of lighting in a 3D space, providing valuable insights for designing an effective lighting system. Customization of lamp powers and colors in retail is another aspect that can have a significant impact on the customer experience. Lighting can be customized to create a specific atmosphere or to highlight particular products. It can also be used to create contrasts of light and shadow, which can add depth and interest to the store space. In conclusion, lighting in retail is much more than a simple visibility issue. It's a key element in creating a welcoming atmosphere, highlighting products, and guiding customer behavior. As the famous industrial designer Raymond Loewy once said, "Between two products equal in price, function, and quality, the one with the most attractive exterior will win." In the world of retail, light can make the difference between a product that is liked and one that is purchased.