Microneedling is often described as a treatment that stimulates collagen and rejuvenates the skin. Those statements are broadly true, but they only tell part of the story. After reviewing the published evidence, I explore what mechanical microneedling can realistically achieve, which patients are most likely to benefit, and why understanding the underlying skin concern matters more than choosing a device.

Skin ageing is not caused by collagen decline alone. Over time, changes occur in inflammation, hydration, extracellular matrix organisation, vascular supply, and tissue repair signalling. These gradual biological changes influence skin quality, texture, elasticity, and overall facial appearance.