First of all, let's review the knowledge points: acne scars mainly include atrophic scars (depressions) and proliferative scars (protrusions). The more common atrophic scars are actually the pockmarks we often say, which are divided into three types: ice cone type, box type and rolling type.
Commonly used methods to treat acne pits include chemical peeling, dot matrix laser, subcutaneous separation, microcrystal grinding, filling and so on. Because there are usually different types of scars, combined treatment will be more effective than single treatment. Don't ask why there is no recommendation for skin care products. The effect of skin care products on acne pits is really minimal. )
Among them, dot matrix laser is called "acne pit terminator" by some people. Not as painful as laser polishing, but the effect is also excellent. Today, let's go into the world of dot matrix laser and get to know it.
Stepwise photothermal decomposition
Repair acne scars and shrink pores. Lattice laser is a mode of laser emission, which disperses the original focused spot into dozens to hundreds of tiny focal spots. Micro-separation of heat injury can promote collagen proliferation and reduce heat injury to skin after treatment.
Dot-matrix laser can be used to treat sunken scars after acne, and can also be used to improve pregnancy marks, surgical scars and trauma scars and shrink pores. Each treatment only takes a few minutes to ten minutes, which does not affect work and study. Lattice laser is based on the photothermal effect of the focal point, using some special technical means (scanning hand or lens, etc.). ) The laser emits many tiny beams with the same diameter, which act on the skin to form many micro-thermal damage areas with the same size and uniform arrangement, but the tissues around the beams are not damaged.
Because the dot matrix laser treatment only covers part of the skin tissue, the newly punched holes do not overlap each other, some normal skin is retained, a series of skin reactions such as tissue repair and collagen recombination are accelerated, and fresh collagen is regenerated immediately, so that the skin is firm and shiny, spots are scattered, wrinkles are reduced and scars are smoothed.
What skin problems can dot matrix laser be used for?
Dot-matrix laser has a wide range of uses, such as common scars, such as pockmarked scars, keloids, hyperplastic scars, perennial stubborn scars, traumatic scars, surgical scars, atrophic scars and so on. Large pores; Wrinkles, stretch marks, swelling lines, etc. ; Adjuvant treatment of common wart, verrucous nevus, spider nevus, syringoma, vitiligo, eczema, skin amyloidosis, alopecia areata and other diseases.
This is a process of thermal injury and repair after injury, which will promote dermal tissue regeneration, new collagen fiber synthesis and collagen remodeling, thus improving acne scars. Dot matrix laser is mainly used to treat superficial scars, atrophic scars, large pores, pockmarks and pockmarks, and also has a certain effect on improving stretch marks.
price
The reference price is about 1500-8000 yuan once, and the price will be different according to different regions, doctors, equipment and functional areas. Dot matrix laser therapy generally does not need to choose a specific season, and it can be used in spring, summer, autumn and winter.
classify
According to the intensity of water absorption by laser and whether it has gasification effect on skin tissue, it can be divided into exfoliating (gasification) lattice laser and non-exfoliating (non-gasification) lattice laser.
When the laser beam irradiates the skin to form a columnar thermal denaturation zone, it is called non-exfoliated lattice laser. If the final aperture is real, it is called exfoliated lattice laser.
Stripped lattice laser
Stripped lattice lasers mainly include carbon dioxide lattice lasers (10600nm) and decoy lattice lasers (2940nm).
Among them, carbon dioxide lattice laser has the strongest thermal effect and better effect in treating acne pits. Its operation process is like covering a "chessboard" on the face, and it is also similar to a fool camera/printer.
The advantages of exfoliating dot matrix laser are obvious effect and long duration, and you can feel the obvious improvement of acne pits in a single time, but you still need to persist in treatment for many times to get better results. A course of treatment is about 4-5 times with an interval of 1-2 months.
However, there are many adverse reactions, such as erythema, edema, scab and scales. Epidermal regeneration time is generally within 48 days, usually within 5-7 days, but there may also be side effects such as abnormal pigment, scar, reactivation of herpes simplex virus and itching.
Non-stripping lattice laser
Non-exfoliated lattice lasers mainly include Er: glass (1550 nm, 1540 nm), Nd: YAG( 1064 nm, 1440 nm, 1320 nm) and Er: fiber laser (650 nm).
Some studies have explored the therapeutic effect of non-exfoliating dot matrix laser on different types of acne scars. The results show that among the three types, non-exfoliating dot matrix laser has the best clinical effect on box scar, followed by roller scar.
Non-peeling laser can cool the epidermis, heat the dermis without damaging the epidermis, and reduce the incidence of adverse reactions to a certain extent. It is milder, safer and less invasive, and the epidermis regeneration can be completed within 24 hours. The recovery period is also shorter (usually 1-3 days), so you can go out to meet people after a short rest at home.
However, the curative effect of non-peeling lattice laser is relatively insignificant, and it usually needs to be treated for about 5-8 times with an interval of 3-4 weeks. It was observed that the curative effect after 3 months of treatment was more remarkable than that after 1 month.
Taboo crowd &; An uncomfortable person
Taboo crowd
People with active infection (mainly herpes virus infection), recent tanning (especially within 4 weeks), active skin inflammatory reaction, damaged skin barrier (such as increased skin sensitivity), suspected malignant lesions in the treatment area, organic lesions in important organs, pregnant women and lactating women.
An uncomfortable person
People with untreated acne (if they still have acne pits after finishing, isn't that blood loss? ), people with a history of poor wound repair, keloid and post-inflammatory pigmentation, and people who have received other medical beauty treatments (such as other types of lasers and chemical peeling) at the same site.
What kind of acne pits can dot matrix laser treat?
Pockmarked is very shallow, like a carriage and a roller.
Both non-stripped lattice laser and stripped lattice laser can be treated.
Non-exfoliating lattice laser can promote the formation of new collagen with low pain. General treatment was 5 8 times, with an interval of 3 4 weeks and multiple rounds of treatment.
The exfoliating lattice laser also stimulates the formation of new collagen, and the effect can be seen in a single treatment. After more than three times of treatment, more than 55% of patients can get at least 50% improvement, and there is still new collagen synthesis after treatment 1 year.
② The pockmarked surface is deep, like an ice pick pockmarked surface.
Only peeling lattice laser can be treated, and it often needs higher energy to achieve better curative effect. At present, more than 4 5 courses of treatment are taken, and the interval between courses of treatment is about 3 months.
What preparations need to be made before treatment?
There is no contraindication of dot matrix laser, avoid sun exposure within one month before operation and apply sunscreen to prevent it.
How to do nursing after dot matrix laser surgery?
Three-part treatment, seven-part training and dot matrix laser are not all right, so the kung fu after treatment is indispensable.
1 3 days after treatment: the redness and swelling of the skin gradually subsided and the surface began to scab, so be careful not to rub it hard. Avoid contact with water as much as possible before scabbing is complete (about 1.3 days), and wash your face with clean water after scabbing, but to avoid overheating, wash your face gently and avoid rubbing, and use mild repair skin care products.
6 days after treatment: the skin began to scab. Be careful not to pick off the scab skin by hand in advance and let it fall off naturally. Avoid makeup (including sunscreen/isolation/foundation) before the scab falls off completely, and use sun hats, sunglasses, umbrellas, etc. Used for daily protection; Avoid strenuous exercise. If necessary, use topical drugs within 7 days as directed by the doctor. Avoid using products with functions such as scrub and exfoliation within 2 weeks after treatment.
Key points: Pay attention to strict sun protection after treatment. It is recommended to use umbrella, sun hat and sunglasses when going out, and choose sunscreen/milk on the basis of physical sunscreen.
Can dot matrix laser therapy make the skin thinner and thinner?
All laser projects will temporarily stimulate the skin, but dot matrix laser is not grinding. As long as the postoperative care is done according to the doctor's advice, after the recovery period, the stratum corneum will only be thicker and healthier than before, and there will be no so-called thinning phenomenon.
Can sensitive muscles do dot matrix laser?
Treatment can be done, but the recovery period will be longer. Because the skin barrier repair of sensitive muscles is different from that of ordinary people, sensitive symptoms may be aggravated in a short time after treatment, but as long as skin cleaning, moisturizing care and drug treatment are carried out correctly, they will be cured as soon as possible.
Is the thicker the scab, the better the effect? What should I do after finishing acne?
The thicker the scab, the better. According to the pattern of lattice and the depth of treatment, the scabbing reaction will vary with the peeling degree of skin epidermis. In addition, the degree of scab will be reduced after wet healing, and the sense of experience and comfort will be improved.
Transient papules will subside spontaneously within 3-4 days after operation. If there is a large inflammatory papule, symptomatic treatment can be given, such as the application of fusidic acid.
What is the relationship between lattice laser and carbon dioxide lattice laser?
In the lattice laser family, there are 2940nm erbium laser, 1550nm erbium glass laser, 1320nm laser, 1440nm laser and 2790nm laser. There is also a kind of radio frequency lattice which is not a laser, but also uses lattice technology.
10600nm CO2 lattice laser is the big brother in lattice laser. CO2 lattice laser is the gold standard for treating thousands of acne pits.
How to nurse after dot matrix laser?
1. After laser treatment, the temperature was reduced and applied externally with medical ice packs for 30 minutes;
2. Avoid getting wet within 24 hours after treatment, and apply growth factor externally; From the second day after treatment, you can clean your skin with cold mineral water and apply a collagen mask.
3. The wound will scab in about 3-5 days, and it is not allowed to peel off the scab skin after it falls off by itself;
4. Try to avoid outdoor flow and strictly protect yourself from the sun 2 weeks after laser surgery. After that, if the skin is dry, you can replenish fresh spring water and moisturize it with mild and low-sensitivity skin care products;
5. Eat less spicy food and avoid drinking after treatment; You can eat more foods with high vitamin C content such as vegetables and fruits.
6. After laser treatment, some people will turn black temporarily. The fading time varies from person to person, but it usually fades gradually. Don't worry too much.