system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is the inside of the palms always white regardless the skin color or tan?
gpt
Melanin which colours the skin is in the lower layers of the skin, the skin on the soles of the feet and the palms of the hands needs to be substantially thicker to protect from wear and damage so there is no melanin close enough to the surface to darken those areas.