What Causes Dark Elbows, Knees, and Neck?

1. Friction and Constant Rubbing – Repeated friction from clothing, leaning on elbows, kneeling, tight collars, jewelry, or frequent movement can lead to thickened and darker skin over time.

2. Dry Skin – Elbows and knees naturally have fewer oil glands, making them more prone to dryness and roughness. Dry skin often appears darker and dull.

3. Dead Skin Cell Build-Up – When dead skin accumulates on the surface, the skin starts looking patchy and pigmented.

4. Sun Exposure – UV rays increase melanin production, causing tanning and uneven pigmentation on exposed areas like the neck and knees.