Microneedling is highly effective against skin aging because it induces micro-injuries that stimulate collagen synthesis by up to 400%.

noli's read

Microneedling is based on the principle of percutaneous collagen induction: micro-perforations create a controlled healing process that effectively promotes skin regeneration. A systematic review published in the Journal of Cutaneous and Aesthetic Surgery confirms that this technique significantly improves the appearance of wrinkles and scars by stimulating the production of collagen and elastin. However, the figure of a "400%" increase in collagen is a very specific and potentially exaggerated interpretation, often derived from an older study (such as Fitzpatrick in 2009) that measured this increase under specific conditions, rather than as a universal standard applicable to everyone. While the evidence for clinical efficacy is solid, the variability of results depends greatly on needle depth, frequency of sessions, and the technique used. It is therefore more prudent to consider this practice as an effective supportive tool rather than a standardized miracle solution.

the sources

No named source held this one up — that absence is part of the verdict.