Dermarolling or needling a hypertrophic scar is a good idea but you must be extra careful when it is a keloid. It is not the same thing.
The difference between a keloid and a hypertrophic scar is that a hypertrophic scar is raised but it is more or less within the boundaries of the original injury. Keoloid scars totally outgrow the original boundaries of the injury and they grow to all directions. A person prone to keloids (it is rare) can get a huge scar just after a bug bite or vaccination.
You can needle/stamp a keloid but initially, treat just a very small part of the keloid to see how it responds. Keloids are unpredictable.
What to do about hypertrophic scars:Perform three times a week:
- Needle the hypertrophic scar superficially with our single needle (thin scars) or a 1.5 mm dermastamp (wide scars)
- After needling, perform pressure massage. Apply pressure with your fingers onto the scar spot by spot. Apply pressure to each spot quite strongly for about 20 seconds.
Repeat the pressure massage daily (but only three times a week in combination with needling).
On thick/tough hypertrophic scars, apply wart remover once a week (for sale OTC, usually contains salicylic acid and lactic acid). Apply without needling.
-Every three weeks, needle or stamp the scar densely and deeply to crush the scar collagen.
Why needling helps hypertrophic scars:
http://forums.owndoc.com/dermarolling-microneedling/needlingdermarolling-hypertrophic-scar/You can try:
Retinoic acid (A-Ret):
http://forums.owndoc.com/dermarolling-microneedling/Effect-of-retinoic-acid-on-hypertrophic-scarsContractubex:
http://forums.owndoc.com/dermarolling-microneedling/ContractubexSilicone sheets:
http://forums.owndoc.com/dermarolling-microneedling/Kelo-cote-cream-for-hypertrophic-scars