Microneedling has shown efficacy in restoring lost hair in those who are beginning to bald. Evidence shows that it works well in treating androgenic alopecia (male pattern baldness), and there is also evidence that it can work on those suffering from alopecia areata (a condition where a person's hair falls out in small patches due to the immune system attacking the hair follicles). Whilst the mechanism for this is not known for certain, it is likely that the microneedling process of creating wounds in the skin spurs a healing response which regenerates the health of the hair follicles.
Is This Back Up by Science?
Indeed, check out these studies done on micro-needling for hair loss:
"The results of this study show that Microneedling is a safe and a promising tool in hair stimulation both for male and female AGA" - CLICK HERE FOR SOURCE.
*AGA stands for androgenic alopecia.
"While the current evidence does not allow one to conclude superiority of microneedling over existing standard therapies for hair loss, microneedling shows some promise in improving hair growth, especially in combination with existing techniques." - CLICK HERE FOR SOURCE.
"It is important to note that there was a considerable improvement in both cases – the one that underwent minoxidil infiltration and the other, which underwent only the microneedling process." - CLICK HERE FOR SOURCE.
Which Needle Length Is Best to Restore Hair?
You'll want to use a needle length between 0.75mm and 1mm. Remember to treat an area of skin only once per week. Some sites recommend using up to 1.5mm long needles, which you can consider if you are not seeing results with the shorter lengths. However, make sure you needle yourself only once a fortnight if this is the case.