Microneedles

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Microneedling , micro-needling or percutaneous collagen induction therapy are procedures that are used in cosmetics and dermatology . The surface of the skin is perforated with the help of devices to which the finest needles are attached. The perforation enables cosmetic active ingredients to penetrate deeper and influences the structure of the skin surface.

Devices and needles

On the roller, stamp or pen-like devices (“Dermaroller”, “Dermastamp”, “Needling Pen”) there are a different number of microneedles with a diameter of 0.007 to 0.15 millimeters. B. consist of titanium. The needles can be solid or hollow and connected to an active substance reservoir. The length of the needles depends on the area of ​​application: For example, only needles up to 0.5 millimeters in length can be used for cosmetic use, while treatment with longer needles is considered a medical therapy that may only be carried out in a clinic or medical practice. Appropriate training of the user is required for commercial cosmetic treatment.

Dermaroller

The standard dermaroller is a roller with a handle designed to treat acne scars. It is equipped with 192 microneedles that are distributed over eight rows. The needles are made of silicone or medical stainless steel by means of plasma-assisted etching and sterilized by gamma radiation . A medical dermaroller is a medical device and is intended for single use only.

Dermarollers with needles shorter than 0.15 millimeters are available for home use. This z. B. so-called anti-aging products are worked deeper into the skin. These scooters are intended for multiple use; they must be cleaned thoroughly after each use.

application areas

The microneedling is suitable for the treatment of scars , stretch marks (so-called stretch marks or due to significant weight gain), for wrinkle reduction and optical rejuvenation of the face. In addition, the method can be used for transdermal drug application.

Cosmetics

In cosmetic use, only the horny layer is perforated. In order to reduce wrinkles and achieve a rejuvenating effect, active ingredients such as hyaluronic acid are simultaneously introduced into the surface of the skin.

dermatology

In dermatology, this procedure is used in acne and scar treatment. The needles used here are up to 2.5 millimeters long. Before the treatment, the affected skin area is disinfected and a local anesthetic is applied. After the onset of action, the roller is rolled back and forth a few times; as deeper skin layers are punctured, blood can leak out.

At the puncture sites, collagen islands are then formed as part of the skin regeneration. By bringing these islands closer together, a tightening effect is achieved that lasts permanently with fresh scars. However, this requires several treatment cycles, initially every eight to ten weeks, later every four to six months. In the treatment of scar growth, the microneedles destroy the old collagen fibers, which then form anew.

Side effects and contraindications

Possible adverse effects can include allergic reactions, swelling, pain, infection, or the formation of new scar tissue. The procedure must not be used in the case of skin cancer, keloid tendency and haemophilia .

development

In 1995 David S. and Norman Orentreich described "Subcutaneous Incisionless (Subcision®) Surgery" as a procedure for scar treatment, two years later Camirand and Doucet used a "tattoo gun" for this. In 2006 Desmond Fernandes developed percutaneous collagen induction therapy with the "Dermaroller".

literature

  • Igor Safonov: Collagen Induction Therapy with the Dermaroller. In: Bernd Kardoff (Ed.): Self-pay services in dermatology and aesthetic medicine. 2nd edition Springer, Berlin 2015, pp. 528-533, ISBN 978-3-662-43426-0

Web links

Individual evidence

  1. ↑ a b c Rolf Daniels: Penetration of cosmetic active ingredients. In: Wolfgang Raab, Ursula Kindl: Care Cosmetics: A Guide. Wissenschaftliche Verlagsgesellschaft, Stuttgart 2012, p. 71, ISBN 978-3-8047-2761-8 .
  2. ↑ a b c d S. Doddaballapur: Microneedling with dermaroller. In: Journal of cutaneous and aesthetic surgery. Volume 2, number 2, July 2009, pp. 110-111, doi : 10.4103 / 0974-2077.58529 , PMID 20808602 , PMC 2918341 (free full text).
  3. ↑ Igor Safonov: Collagen Induction Therapy with the Dermaroller. In: Bernd Kardoff (Ed.): Self-pay services in dermatology and aesthetic medicine. 2nd edition Springer, Berlin 2015, p. 530, ISBN 978-3-662-43426-0
  4. ↑ Safonov 2015, p. 531
  5. ↑ Safonov 2015, p. 532
  6. ↑ Collagen Induction Therapy Using Microneedling with the Dermaroller - Summary. Retrieved December 12, 2019.