From the Research
For hair loss treatment, a dermaroller with a needle length of 0.5 to 1.5 mm is generally recommended, as supported by the most recent and highest quality study 1. The 0.5 mm length is ideal for beginners and can be used more frequently (once every 1-2 weeks), while the 1.0-1.5 mm length may be more effective but should be used less frequently (once every 3-4 weeks) as it penetrates deeper and requires more healing time. When using a dermaroller, it is essential to:
- Clean your scalp thoroughly before treatment
- Disinfect the dermaroller with alcohol
- Roll gently in multiple directions (vertical, horizontal, and diagonal) over the thinning areas
- Apply a hair growth serum or minoxidil afterward if desired The microneedling process works by creating controlled micro-injuries that stimulate blood flow to hair follicles and trigger the release of growth factors, potentially enhancing the absorption of topical treatments, as noted in a study on microneedling and its use in hair loss disorders 1. You may experience mild redness or sensitivity after treatment, which is normal. Replace your dermaroller every 2-3 months for hygiene purposes and optimal effectiveness. It is also worth noting that microneedling has been shown to be effective in improving hair parameters when paired with 5% minoxidil, growth factor solutions, and/or platelet-rich plasma (PRP) topicals, or when introduced to subjects whose hair count changes had plateaued for ≥ 6 months on other treatments, as reported in a systematic review on the efficacy of non-surgical treatments for androgenetic alopecia 2.