ONE OF THE MAIN DERMA ROLLER BENEFITS is its ability to stimulate the growth of collagen and elastin, which is the key to new, youthful-looking skin. Some doctors would even go so far as to say that the procedure is the most powerful way to stop aging in its tracks and prevent fine lines and wrinkles from forming. THE TINY PUNCTURES MADE BY THE DEVICE stimulate a healing response within the skin, kick-starting cell renewal and the production of collagen and elastin. This helps to rejuvenate the appearance of the skin, plumping out fine lines and wrinkles and improving the appearance of marks, scars and stretchmarks. STRETCH MARKS ARE SIMILAR TO SCARS except stretch marks occur from rapid skin stretching. Microneedling/breaks down stretch mark tissue and triggers collagen growth. This will dramatically reduce and fade the stretchmark over several treatments. Size:0.25MM(135mm in length) Colour:As Shown Quantity:1pc