Microneedling at depths greater than 0.6 mm may damage miniaturized hair follicles, with 0.5 mm showing better results for hair regrowth. Combining microneedling with minoxidil enhances absorption, but caution is advised to avoid damaging follicles.
Microneedling can still be beneficial when using oral finasteride and minoxidil, with a recommended needle length of 0.5mm to 1.0mm. A stamp or pen is preferred over a roller for microneedling.
The user has been using topical finasteride and minoxidil for two years with decent regrowth and recently added microneedling to their routine. They are questioning if the small hairs observed are new regrowth from microneedling or just vellus or miniaturized hairs.
A user discusses their experience with at-home microneedling at 1mm for hair growth, feeling like they're hitting their skull. Other users suggest lowering the needle depth or stopping due to discomfort.