The Dermaroller, How It Works and Its Benefits
Microneedling with dermaroller is a new technique that treats scars, stretch marks and wrinkles, and for overall facial rejuvenation. It is a straightforward and relatively cheap modality that may also be used for administering drugs transdermally.
Dermaroller attained popularity first as a simple approach to the treatment of scars, particularly those caused by acne. It may be used safely by any licensed dermatologist with minimum training.
The Dermarolling Instrument
The common dermaroller used for acne scars is shaped like a drum and has 192 microneedles, each with a length of 0.5 to 1.5 mm and a diameter of 0.1 mm, neatly arranged in eight rows. Through reactive ion techniques, the microneedles are etched into silicon or medical-grade stainless steel. Pre-sterilization of the instrument is done by gamma irradiation. Medical dermarollers may only be used once.
How It Works
Every needle on a medical dermaroller has a length of about 0.5-1.5 mm. During treatment, the needles prick into the stratum corneum of the skin and create holes known as microconduits, without damaging the epidermis. Dermarolling 15 times over a certain area produced roughly 250 holes for each square centimeter. Microneedling causes the release of growth factors that stimulate new collagen (natural collagen) and elastin formation in the top layer of the skin known as the papillary dermis. On top of that, new capillaries are formed, and with such neovascularisation and neocollagenesis that come after treatment, scars are visibly reduced. Hence, the procedure is rightly called “percutaneous collagen induction therapy,” and has been used for photoageing treatments too.
Dermaroller for Acne Scars
Dermarolling or microneedling is a quick and easy procedure that may be performed in any office. First, topical anesthesia is applied to the area of treatment, where it is left to work for 45 minutes to an hour. Once the area has been prepared, the dermatologist starts dermarolling, making 15 to 20 horizontal, vertical and oblique strokes. The site will then be wet with the use of saline pads. The entire procedure takes about 15 to 20 minutes, depending on how large the treatment area is.
Prior to the next treatment, there should be at least a six-week gap, the period it takes the body to manufacture new natural collagen. Moderate acne scars will probably require three to four treatments.
Patients are generally known to tolerate microneedling, except the procedure can cause erythema, which can last for up to three days after the treatment. Dermatologists recommend photoprotection for a week, as well as the application of local antibiotic creams. Normally, patients will be able to go back to their regular routines after 24 hours.
Home-use dermarollers are often shorter than 0.15 mm in length, and are very useful for the transdermal delivery of lipopeptides and many other anti-aging substances. Most brands may be used twice weekly for up to a hundred times. After every use, the rollers must be cleaned with hot tap water and shaken dry.