Skin damage after laser or radiofrequency procedures (e.g. fractional CO₂ laser, RF lifting, etc.) is a common occurrence due to the fact that such procedures are aimed at deep stimulation of the skin. They can provoke microtrauma or trauma, which weakens the barrier function of the skin, disrupts the lipid layer, increases skin sensitivity, disrupts transepidermal water loss, etc.
Let’s consider the main complications of skin conditions after aggressive hardware procedures or chemical peels, retinol treatment, etc.
Damage to the skin barrier layer
The mechanism of disruption of the skin barrier function is associated with the impact on the main structures and processes that ensure its integrity. Here are the main stages and causes:
1. Damage to the stratum corneum:
The stratum corneum (the top layer of the epidermis) consists of corneocytes (dead cells) and a lipid matrix that acts as a “cement” between the cells.
Laser or radiofrequency exposure destroys the lipid barrier, which leads to an increase in transepidermal water loss (TEWL).
As a result, the skin loses moisture, becomes dry and vulnerable to external irritants.
2. Inflammatory response:
Under the influence of heat or microtrauma, inflammatory processes are activated.
Inflammatory mediators (cytokines, interleukins) are released, which damage cell membranes.
This increases skin sensitivity and slows down the restoration of the barrier function.
3. Disruption of lipid synthesis:
Keratinocytes (epidermal cells) stop fully producing ceramides, cholesterol and free fatty acids necessary for barrier restoration.The lipid layer becomes thinner, which impairs its protective properties.
4. Microtrauma and cell destruction:
Lasers or radiofrequency waves cause microthermal damage in the epidermis and dermis.
This leads to an imbalance in the processes of differentiation and renewal of skin cells, disrupting the structure of the stratum corneum.
5. Increased skin permeability:
Violation of the integrity of the epidermal barrier makes the skin more permeable to potential allergens, microbes and toxins.
External irritants can penetrate deeper, causing additional inflammation and irritation.
6. Destruction of proteins in the skin:
Thermal exposure destroys keratin proteins and structural elements such as filaggrin, which ensure the adhesion of corneocytes.
This further weakens the barrier.
After laser or radiofrequency procedures, the skin temporarily loses the ability to effectively retain moisture and protect itself from external factors.
Violation of the lipid layer of the skin
Violation of the lipid layer of the skin can lead to a number of physiological and biochemical processes that negatively affect the condition of the skin. Here are the main ones:
1. Loss of barrier function
The lipid layer of the skin, which is located in the stratum corneum of the epidermis, plays a key role in protecting against external influences. When the lipid layer is damaged:
Transepidermal water loss (TEWL) increases, leading to dehydration of the skin.
The skin becomes more susceptible to penetration of irritants, allergens and pathogens.
2. Dehydration of the skin
A lack of lipids (such as ceramides, cholesterol and fatty acids) leads to the skin losing moisture. This can cause:
A feeling of tightness.
Scaling and dryness.
Formation of cracks and micro-tears.
3. Inflammatory processes
A damaged barrier allows bacteria and toxins to penetrate, which stimulates an inflammatory response. This can manifest itself as:
Redness.
Itching.
Worsening of symptoms of skin diseases such as eczema, dermatitis or psoriasis.
4. Changes in the skin microbiome
The lipid layer of the skin ensures the balance of microflora. Its damage can lead to:
Reproduction of opportunistic and pathogenic microorganisms.
Reduction in the population of beneficial bacteria, which aggravates inflammation and irritation.
5. Increased skin sensitivity
Violation of the lipid layer reduces the skin’s resistance to external stressors, which leads to:
Reactions to cosmetics, water and detergents.
The appearance of a burning or tingling sensation.
6. Slowing down of skin regeneration
Lipids play a role in skin restoration. Their deficiency slows down:
Healing processes.Renewal of epidermal cells.
Increased sensitivity of the skin nerve fibers
Increased sensitivity of the skin nerve endings, or hyperesthesia, manifests itself as a heightened perception of stimuli that do not normally cause discomfort. For example, light touch, pressure, or temperature may be perceived as painful, irritating, or simply more intense than usual.
Manifestations:
Skin tenderness to touch: Even light touch may cause discomfort or pain.
Burning or tingling: A “pins and needles” or burning sensation.
Temperature hypersensitivity: Minor changes in temperature may be felt intensely (for example, cold as pain or heat as burning).
Prolonged sensation of irritation: After exposure to a stimulus, discomfort may persist longer than usual.
General feeling of irritation: The skin may seem constantly sensitive without any apparent irritant.
Reduction of the volume of the fat layer, displacement of the skin
After radiofrequency or laser procedures, the volume of fat tissue on the face can decrease for several reasons related to the specific effects of energy on tissue.
The main reasons:
Thermal effect:
The energy heats the tissue to a certain depth, which stimulates the formation of collagen, improves the elasticity of the skin and can contribute to “lifting”. However, at too high temperatures (usually above 45-50 °C), fat can be destroyed (lipolysis). This occurs due to the increased sensitivity of fat cells to thermal effects.
Fat cell apoptosis:
Under the influence of heat from radiofrequency or laser waves, fat cells can undergo uncontrolled death (apoptosis). The destroyed cells are then removed by the lymphatic system, which leads to a decrease in the volume of fat tissue.
Incorrect choice of depth of action:
Radiofrequency or laser procedures on the face must be carefully calibrated to act only on the skin and superficial layers, without damaging the subcutaneous fat. If the device is set up incorrectly or too high a power is used, this can lead to the destruction of fat tissue.
Features of tissue structure:
In some people, the subcutaneous fat tissue is thin or sensitive, so even a small impact of RF energy can lead to significant changes. This is especially noticeable in people with a thin face. Not all patients can undergo hardware procedures
Age-related changes:
With age, the volume of fat tissue on the face naturally decreases. If the procedures are performed on mature skin, this can enhance the process by stimulating lipolysis.
Triggering autoimmune reactions
Cosmetic hardware procedures in some cases can potentially trigger an autoimmune reaction of the skin, although this happens rarely. Such reactions are associated with the fact that hardware methods affect the skin or deeper layers of tissue, which can activate the immune system. This is especially true for people with a predisposition to autoimmune diseases or with existing chronic diseases.Possible mechanisms for triggering autoimmune reactions:
Tissue damage:
Some hardware procedures (e.g. lasers, radiofrequency or ultrasound methods) cause microdamage to the skin, which activates the healing process. In predisposed people, this process can go “wrong”, leading to hyperactivation of the immune system.
Activation of stress proteins:
Thermal exposure (e.g. radiofrequency or lasers) can stimulate the production of heat shock proteins (HSP), which are involved in immune reactions. In some cases, this can provoke an autoimmune process.
Changes in protein structure:
Under the influence of hardware methods, the structure of skin proteins (e.g. collagen) can change. The immune system can begin to recognize these altered proteins as “foreign”, which will lead to an autoimmune reaction. Introduction of foreign materials:
Procedures combined with injections (e.g. combined with the introduction of fillers) may cause a rejection reaction or immune-mediated reactions to the injected substances.
Activation of latent infections:
Some autoimmune processes may be associated with the reactivation of chronic infections (e.g. herpes viruses), which may occur after procedures stimulating
Who is at risk:
People with existing autoimmune diseases (e.g. lupus, psoriasis, rheumatoid arthritis).
People with a family predisposition to autoimmune diseases.
People with increased skin sensitivity and a tendency to allergic reactions.
People with chronic infections (e.g. herpes, borreliosis).
Treatment of skin damaged cases
Treatment of skin with damage of varying complexity using stem cells. There is practically no single treatment protocol that would suit each patient, because everyone has a different medical history, the methods of exposure and the degree of damage are also different, anamnesis, age, preliminary stages of treatment – many factors that need to be taken into account when choosing a treatment program.
In the treatment, both stem cells of general action and correction (such as mesenchymal cells) and narrowly differentiated progenitor cells can be used, which act locally on the problem, solving it gently, without resistance from the immune system. Exosomes for superficial and deep skin regeneration, anti-inflammatory cytokine complexes, mitochondrial complexes, vesicles for intracellular and extracellular communication are also used. Each patient is given attention in order to analyze the situation and select a personalized treatment plan.