Abstract
Microneedling, also referred to as percutaneous collagen induction therapy, uses small needles to create mechanical injury to the skin, stimulating the wound-healing cascade and new collagen formation. Compared with other skin resurfacing techniques, microneedling preserves the epidermis and is nonablative, therefore reducing inflammation, downtime, and risk of dyspigmentation. In addition to increasing collagen production in fibroblasts, microneedling also helps normalize cell function of keratinocytes and melanocytes and can be used to increase absorption of topical medications, growth factors, or deliver radiofrequency directly to the dermis. The benefits of microneedling, associated procedures, indications for use, technical considerations, and potential complications are discussed.
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