Sorry for the delayed reply!
Using a 1.5 mm dermastamp may be quicker way of needling stretch marks if you have very many. It is less targeted but still very effective.
>1.My breast and some small spots on legs have hyper-pigmentation on every area that I have >derma-rolling since 12/24/12My answer here applies to you as well:
https://http://forums.owndoc.com/dermarolling-microneedling/single-needled-1-stretch-mark-3-12-weeks-ago-mark-still-red-normal/>2.Unlike my own technique, I get a lot of bruising, which I read to be a good thing, from single
>needling. The bruising (deep blue-black bruising in some areas) last at least 14 days, which I
>thought was a little odd, but I do bruise easily even with a skin type of Fitzpatrick V. Is that
>normal?
It would be interesting to know what your technique is.
Bruising is not harmful but if you get it a lot of brusising, the needle length is too long for you or for that area. Instead of a 2 mm single needle, use a 1.5 mm dermastamp.
>Have I read correctly that single needling will help flatten the scar (note: I have gotten the scar
>almost completely flat)?
This link explains why microneedling flattens scars:
https://http://forums.owndoc.com/dermarolling-microneedling/needlingdermarolling-hypertrophic-scar/Also, if the scar is hypertrophic, perform the pressure massage described here:
https://http://forums.owndoc.com/dermarolling-microneedling/what-to-do-about-hypertrophic-scars/ >4.Also, the scar of my knee is rough (extremely dry and thicken skin). I can pick at the scar and
>flakes of skin with come off. What do you think that is? How can I improve that area?
Using a 1.5 mm dermastamp is perhaps better for this type of thick scar.
You should constantly moisturize it with a semi occlusive cream such as Infadolan or even an occlusive cream such as Vaseline.