What is the principle of laser acne treatment? What are the hazards of laser acne treatment?

Laser acne removal uses unique laser technology to remove acne. Laser acne removal can effectively stimulate the skin and kill a variety of bacteria that cause acne, achieving a very ideal acne removal effect.

Medical-grade laser acne removal is mainly a red-blue light photodynamic instrument, which uses high-purity, high-power density blue light with a wavelength range of 415nm to induce apoptosis of Propionibacterium acnes (a major bacterium that causes acne) and play a bactericidal role. In addition, it can also effectively inhibit the secretion of sebaceous glands; red light will penetrate the surface of the skin, act on scar tissue, stimulate cells to secrete collagen and fibrous tissue, and play a role in removing acne marks and repairing acne scars. Most red, blue and yellow light devices use light-emitting diodes (LEDs) or xenon lamps as light sources, so red, blue and yellow light is often called LED light.

1. Harm of red and blue light acne treatment

When it comes to the hazards of laser acne treatment, we can first look at whether the familiar red and blue light acne treatment is harmful. Red and blue laser is a kind of cold photon, which is not a laser in the strict sense. Red and blue light is a milder pulse light, which uses non-invasive treatment and irradiates the skin for 20 minutes. The treatment process has no thermal effect and will not produce pigmentation. Generally speaking, there are no side effects and it can avoid the damage of thermal effect to the skin. Therefore, red and blue light acne treatment is harmless.

2. The harm of photorejuvenation and acne treatment

Photorejuvenation is not harmful, but this is based on the qualified doctors in regular hospitals. The reason why photorejuvenation is harmless is that photorejuvenation technology is a non-stripping physical therapy with high directionality, high density and coherence. Photorejuvenation can be concentrated to a very small treatment area, so its action site is accurate and will not cause damage to surrounding tissues and skin appendages. At the same time, the non-invasive treatment method of photorejuvenation is suitable for different skin conditions, safe and effective, and will not cause damage to the skin.

3. Harms of fractional laser acne treatment

Fractional laser is a traumatic treatment method, so it has more potential hazards and adverse reactions in terms of acne removal.

01. Exudate and bleeding

Fractional laser therapy uses laser to evenly make tiny holes on the skin, thereby forming three areas in the skin layer: thermal exfoliation, thermal coagulation, and thermal effect. If the operation is not done properly, the wound may exude and bleed.

02. Facial burns

Fractional lasers can automatically fine-tune the diameter and density of the light spot to evenly distribute the energy, but if the operation is incorrect, it may cause local excessive heat and cause facial burns.

03. Wound infection

After receiving fractional laser treatment, there will be wounds on the facial skin that are invisible to the naked eye, but bacteria can enter. If the instruments are not thoroughly disinfected during the operation and the post-operative care is not proper, there is also a risk of wound infection.

04. Redness, swelling and pain

Fractional laser treatment will cause slight damage to the skin, and the skin will usually become red, swollen and painful after treatment. However, since the damage is relatively minor, the symptoms of redness, swelling and pain will generally disappear within 24 hours.

05. Temporary scab

Fractional laser treatment will help remove the old stratum corneum, so within a short period of time after treatment, the aging and necrotic tissue will naturally fall off and be replaced by new healthy skin. The peeling is like the reaction after sun exposure, but it will not be painful.

06. Temporary pigmentation

Depending on the extent of treatment, the skin will temporarily darken, usually bronze, for 3-14 days. It may take 3-6 months to fully restore the natural skin tone.

07. Dry skin

During the fractional laser treatment, the old stratum corneum of the epidermis will be peeled off, which will affect the skin's water-locking function. At the same time, due to the photothermal effect, the temperature of the epidermis will increase and the evaporation of water will accelerate, so the skin will feel a little dry and tight.

08. Leave scars

After fractional laser treatment, scars may be left. This is because fractional laser is an invasive laser treatment. If improper care is not taken, it is very likely to leave skin scars after treatment.

To avoid the harmful effects of laser acne treatment, you must go to a regular plastic surgery hospital and find an experienced professional doctor for diagnosis and treatment. If you are looking for a "doctor" in a private studio, beauty salon, nail salon or even a hair salon to do laser treatment for cheap, the harmful effects of laser acne treatment will inevitably be unavoidable, and the consequences will often be unbearable. You may also need to spend more money to find a professional doctor for repair later. Therefore, in order to be safe and beautiful and avoid the harmful effects of laser acne treatment, it is best to choose a professional doctor in a regular plastic surgery hospital for systematic laser acne treatment.

1. The principle of red and blue light acne removal

The red and blue light photodynamic instrument removes inflammatory acne. It uses high-purity, high-power density blue light with a wavelength range of 415nm to induce apoptosis of Propionibacterium acnes (a major bacterium that causes acne) and has a bactericidal effect. In addition, it can effectively inhibit the secretion of sebaceous glands. Red light will penetrate the surface of the skin, act on scar tissue, stimulate cells to secrete collagen and fibrous tissue, and play a role in removing acne marks and repairing acne scars. Most red, blue and yellow light devices use light-emitting diodes (LEDs) or xenon lamps as light sources, so red, blue and yellow light is often called LED light.

2. The principle of photorejuvenation to remove acne scars

Photorejuvenation removes acne marks by using the photochemical effect of the strong pulsed photons (also called lightquantum) of the photorejuvenation device to stimulate the skin and cause chemical changes in the molecular structure of the collagen fibers and elastic fibers in the dermis: the number increases, the fibers are rearranged, and their original elasticity is restored, thereby achieving the therapeutic effect of eliminating wrinkles and shrinking pores. In addition, the photothermal effect it produces can enhance blood vessel function and improve the microcirculation of the skin. This can achieve the effect of improving acne marks and inflammatory acne (combination treatment with red and blue light may be required).

3. The principle of fractional laser acne scar removal

The principle of fractional laser acne pit removal is to divide a laser beam into multiple laser beams, forming a heating zone composed of laser action points and intervals in the epidermis. Each laser action point is composed of a single or several high-energy laser pulses, which can directly penetrate into the dermis. When the laser energy reaches a certain level, it will be converted into heat energy. The thermal stimulation will cause the collagen in the dermis to shrink immediately, the collagen will denature, and become the matrix for synthesizing new collagen, and finally produce new skin tissue to replace the skin with acne pits. This is the principle of fractional laser acne pit removal.