system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: why can’t scars tan like the rest of your skin can?
gpt
In your skin, there are a couple different layers. In the most superficial layer, there are little cells called melanocytes that are responsible for “tanning.” A scar often damages the dermis and destroys these little cells and leaves a empty space that is filled in by the layer of skin just below epidermis, called the dermis. This layer of skin doesn’t have these little cells and therefore cannot “tan”.