1. Lighting where vertical meets horizontal is important in terms of safe navigation
through a space. That is why most warehouses and barns use barn lights to make work faster and efficient. Specular or reflective surfaces cause visual problem and should not be considered on areas where most of the activities of your store are present.
2. People follow the brightest path. Down lights like rlm lighting is commonly used to attain the a higher level of illumination with a uniform distribution of light. The Studies found out that people are like moths which are easily attracted to brightness.
3. Brightness can focus attention. When creating an accent point, increasing brightness contrast between the object and the surrounding increases the impact. This is mostly use to highlight important architectural accent of the building, sign frames and logos of your store. This is very effective in promoting featured products of your store.
Thinking about the layers of light and how light affects your customer on both psychological and behavioral level will present you a mental design concept when someone mention- how do you light a retail? a beauty parlor? Lighting is a key factor in helping the space meets your customer's requirements.