How many times should I be I be making contact with an area with a Derma stamp

So I have been using a Derma stamp for awhile. I was wondering what people recommend as the number of contacts per area for hair growth on both scalp and face. I only have done about 3-4 contacts, so like vertical, horizontal, and diagonal once at each like stamp sized area. I’ve been using 1.5 length then in about 2 weeks using a 1 giving a week of rest and repeating. Should I be doing more contacts on my scalp and face or should I lengthen out the days between each session?

3-4 contacts per area in multiple directions is fine. With a 1.5 mm needle, giving a week’s rest between sessions is ideal to allow for healing. Consider staying consistent with this routine for the best results.