Home dermarolling with a 1.5mm?

I personally would recommend a 0,5 mm roller for home use. Anything approaching 1 mm will require numbing cream and antibiotics afterwards as you will bleed. I like a once to twice a month regime for my patients to do 'home work' in between energy based micro needling devices. See more on the 'How to' video below. CheersDr Davin S. LimLaser and aesthetic dermatologistBRISBANE, Australia. 

I do not recommend the use of 1.5 mm needles for home micro--needling, and there is evidence to suggest that 0.5 mm needles can be just as effective, Also, rollers such as the Dermaroller create a
more erratic pattern of "tears" through the skin rather than the
clean, more evenly distributed punctures seen with motorized micro-needling
machines.