Microneedling at less than 0.5mm depth

Does microneedling at <0,5 mm depth really increase minoxidil absorption?

The epidermis of the scalp is 0.5mm thick so if you microneedle at that depth or less, the epidermis has no blood supply so speak of and mainly contains keratin. There will be no benefit and no absorption at 0.5mm depth or less of any medication other than what normally works its way through the scalp. The purpose of microneedling is to get to the stem well that resides about 1-1.5mm below the scalp surface and produce wounds that force healing and hair regrowth.  Microneedling depths of 1=1.5mm is ideal.