Collagen Percutaneous Induction Needling or Collagen PIN is an innovative method of microneedling, one of the most popular and effective treatments for acne scarring, fine lines, and overall skin rejuvenation. It works by gently creating thousands of microscopic channels into your skin’s surface to allow your skin to heal tighter, smoother, and with renewed volume. Scarring and aging break down our collagen and elastin which leads to an uneven texture. When injured, your skin heals itself by creating fresh collagen and elastin.