Milia are primarily caused by trapped dead skin cells that become embedded just beneath the skin's surface, forming small, hard cysts.
Here's a more detailed explanation:
Your skin naturally sheds dead skin cells to allow new cells to grow. This process is a normal part of skin regeneration. However, sometimes these dead skin cells don't shed properly. Instead, they become trapped beneath the surface. This trapping leads to the formation of tiny, pearl-like bumps, known as milia.
Essentially, the natural exfoliation process is disrupted, and keratin (a protein found in skin cells) gets trapped, leading to the development of these harmless, yet sometimes bothersome, cysts.
