The evidence that Dermapen microneedling can improve scars and stretch marks is compelling. A study of microneedling’s effect on scars revealed that clients experienced noticeable clinical improvement in the look of their post-acne or post-surgery scarring after three months of microneedling treatments. Fact is, it stimulates the repair process by immediately boosting collagen production. The result? Plumper, more even skin texture and tone, plus less obvious scarring.