A review on recent advances and challenges of microneedle technology for enhanced topical treatment of skin disorders.

Microneedles are tiny, minimally invasive needles that are made to create microchannels over a subcutaneous layer of the skin. These micro-injuries encourage the secretion of growth factors and prompt collagen synthesis. The reasons for using microneedling therapy have increased significantly, leading to its widespread adoption in dermatology. This review article discussed recent advances and challenges of microneedle technology for enhanced topical treatment of skin disorders. It discussed the effective and safe use of microneedles for treating different types of skin conditions like acne, scars, alopecia, melasma, skin rejuvenation, and photo-damage. The drug delivery through the skin was enhanced and rare or permanent adverse effects were not mentioned, while temporary redness and post-inflammatory hyperpigmentation were frequently seen. Microneedling seems to be a generally reliable and secure treatment choice for various skin conditions. More extensive and randomized clinical trials were necessary to ensure their safety and efficacy across diverse populations, conditions, and treatment durations. This trial helps to identify optimal dosages, long-term outcomes, and any adverse effects that may not appear in smaller studies. They also enable comparisons with existing therapies, ensuring the technology's generalizability and value. Moreover, such trials are essential for regulatory approval and to determine which microneedle technologies work best for specific uses.