The reason why mature stretch marks and other mature scars are whiter than the surrounding skin is because scar tissue has a limited blood supply and it has an insufficient amount of functional melanocytes. Melanocytes produce melanin. Melanin is the pigment that determines the color of our skin. When our skin is exposed to the sun, the skin produces more melanin as a protection – melanin absorbs UV.
Dermarolling and especially more intensive procedures such as single needling or dermastamping can trigger neovascularization (formation of new blood vessels) and new melanocytes production. Moreover, it crushes the hardened scar collagen and that softens the stretch mark.
This should improve the color and texture of your stretch marks (if you are lucky, patient and persistent).
Please look at the before and after photos of our customers:
https://http://www.owndoc.com/stretchmarks/dermarolling-before-and-after-photos-from-our-customers/ The best approach is:
Pre-treat the skin with dry brushing, Tretinoin gel and vit. C according to our instructions.
Roll the whole area with 1.5 mm roller.
Immediately, or some days later after rolling with a 1.5mm roller, single-needle or derma-stamp the stretch marks only.
If you want to further increase the chance of color improvement, you can attempt to transfer melanocytes from normal skin to your stretch marks. Melanocytes aren’t very deep in the skin. They are at the bottom of the epidermis, which is about the depth to which the 0.5 mm roller penetrates. Immediately after single needling or derma stamping, use a 0.5 mm roller to attempt melanocytes “transplantation”.
Use stretch mark free skin to harvest the melanocytes . First needle or stamp the stretch marks/scars. Then roll your stretch marks free skin with 0.5 mm to hopefully harvest some melanocytes with the needles of the roller – then immediately roll over your stretch marks/ scars to hopefully implant them. Repeat this harvest/implant procedure several times during one procedure.
More info here:
https://http://forums.owndoc.com/dermarolling-microneedling/Melanocytes-transfer-for-white-scars-and-hypopigmentation