Saturday, April 26, 2014

Do derma rollers work for reducing old stretch marks?

Stretch marks are deep tears or rips through the deep skin layers and contain scar tissue which is tough. To have a real effect on them a microneedle roller would need to have needles at least 2mm long to penetrate into the scar tissue of the stretch mark!

This is much longer than a home use roller which are typically 0.2mm to 0.5mm long. Needles of more than 0.3mm / 0.5mm long will reach the nerve endings in the skin and are therefore painful! That's why we use local anesthetic in clinic treatments. 

We only use Genuine Dermarollers which have a medical CE mark, are sterile, single use rollers with surgical steel needles. Other dermarollers are not necessarily made to these high standards - bear this in mind when considering either clinic treatments or the purchase of a home use roller system! I have been sent samples of various dermarollers and needles have come out - you wouldn't want that to happen!

The objective with skin needling is to induce pinprick bleeding of the skin. The bleeding brings various cellular actions (fibroblast cell activity) and materials up through the skin's layers including skin growth factors. This is the same response the skin makes to an injury and instigates the formation of new skin and therefore collagen.

This collagen formation helps to smooth and fill in a stretch mark.
Several treatments would be needed depending upon the age and depth of the stretch marks.

I have had my own very deep stretch marks, which were caused during pregnancy 18 years ago, treated here in my clinic with a 2mm and a 2.5 mm dermaroller, 8 weeks apart. 

The stretch marks are now very much smoother and not as deep. I feel than at least one more treatment would be beneficial to reduce them further. 
I hope this goes someway to explain why a short home use roller couldn't make a difference to stretch marks.
It must be stressed that stretch marks cannot be eradicated completely by any treatment.

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