The three types of minimally invasive skin rejuvenation procedures

Several minimally invasive skin rejuvenation procedures help improve skin texture, reducing the appearance of fine lines, wrinkles and acne scars. The goal of most minimally invasive skin rejuvenation procedures is to trigger a wound repair response, encouraging the body to replenish or remodel old or damaged tissues. The process may be mechanical, thermal or chemical in nature. Below, we discuss examples of each.


three types of minimally invasive skin rejuvenation procedures

Micro-needling (mechanical injury)

Micro-needling uses tiny needles to create micro-injuries in the skin, triggering the body’s natural wound-healing response. During this process, healthy new connective tissue (collagen, elastin and other extracellular matrix substances) is created as the tissue is remodeled.


  • Leaves the epidermis mostly intact, allowing it to retain the natural barrier against pathogens, UV radiation and damaging free radicals. Micro-needling produces only minimal, transient penetration of the epidermis, minimizing risk of scarring, infections and hyperpigmentation.
  • Helps restore dermal papillae structure. The dermal papillae facilitate the exchange of oxygen, nutrients and waste products between the dermis and epidermis. Dermal papillae also strengthen the junction between the dermis and epidermis.
  • Releases growth factors that initiate the tissue remodeling process.
  • Mechanically breaks down scar tissue, allowing the cells access in order to remodel the healthier tissue.
  • Results in minimal inflammation. The degree of inflammation may play a major role in determining whether scar tissue is formed during wound healing.
  • Doesn’t cause heat-shock proteins to be produced, so hyperpigmentation isn’t likely to occur.
  • Increases production of new extracellular matrix substances such as collagen in a configuration more like healthy skin.

Chemical peels (chemical injury)

Applying chemical agents to the skin causes controlled erosion of the epidermis. Chemical peels lead to exfoliation and removal of superficial lesions, followed by regeneration of new epidermal and dermal tissues.

Laser resurfacing (thermal injury)

Laser resurfacing involves ablating the outer layers of the skin (epidermis and shallow dermis), stimulating the healing process. Laser light is converted to heat, removing layers of skin and leading to tissue coagulation. This results in an overall tightening of the skin. However, the thermal process results in greater inflammation than the mechanical approach and, therefore, may lead to dyspigmentation in patients with darker skin types.

The SkinPen micro-needling procedure assists in improving the appearance of fine lines, wrinkles and acne scars. SkinPen is safe and effective for all skin types and colors and has minimal side effects and downtime. The Skinfuse skincare products deliver the nutrients your skin cells need to optimize the results of the SkinPen procedure.

Contact your SkinPen provider to learn how SkinPen and Skinfuse can work together to help improve the health and appearance of your skin.