Acne scars are among the main complaints in dermatology clinics. They often have a direct impact on self-esteem and lead many patients to seek truly effective treatments. With advances in technology, fractional CO2 laser has established itself as the best option to promote skin renewal and significantly improve the appearance of scars.
This is a treatment that has evolved greatly over the years and, when properly indicated and correctly performed, provides visible and progressive results, always respecting each patient’s individuality.
Acne scars: Why do they bother so much?
Acne scars cause significant aesthetic discomfort. Many patients arrive at the clinic feeling anxious, especially after having tried other types of treatments that did not bring satisfactory results.
Beyond the visual aspect, there is also a strong emotional impact, since skin appearance directly influences self-confidence and well-being.
Therefore, the search for an effective treatment is not only aesthetic, but also emotional.
CO2 laser in the treatment of acne scars
The CO2 laser is considered the gold standard for treating acne scars. It works by stimulating skin renewal through controlled heating of the deeper layers, promoting collagen production and improving skin texture.
It is important to highlight that there are several types of lasers available on the market, but not all of them offer the same level of technology, safety, and effectiveness. That is why choosing the right equipment makes all the difference in the final result.
Fractional and pulsed laser: technology that enhances results
Fractional and pulsed laser allows thermal energy to be delivered gradually to the skin. This ensures greater safety and better use of heat, stimulating collagen production more efficiently.
In addition, this type of technology reduces the risk of unnecessary damage to the skin surface and improves the recovery process.
The importance of heat in skin renewal
Heat is the main stimulus for collagen production and for the formation of new skin. Unlike lasers that only cause superficial burns, a properly calibrated CO2 laser delivers heat at the correct depth, allowing the skin to regenerate with quality.
When the skin only suffers a superficial injury, it merely tries to recover from the damage. But when it receives controlled heat, it enters a true renewal process, forming new tissue and improving the appearance of scars.
The importance of the professional in treatment success
It is not enough to just have modern equipment. The professional must have experience to properly calibrate the laser and define the appropriate intensity for each skin type and scar. This combination of technology and technical expertise is what guarantees safety, effectiveness, and good results.
How many sessions are needed?
On average, three to six CO2 laser sessions are recommended. The exact number depends on the depth of the scars, skin type, and each patient’s individual response to treatment.
The intervals between sessions are usually monthly or bimonthly and must be respected, as they follow international protocols that ensure proper skin recovery and continuous collagen production.
What is recovery like after CO2 laser?

After the laser application, it is necessary to avoid extreme heat and direct sun exposure. It is also recommended to temporarily stop using acids and to strictly follow the prescribed medications to speed up skin recovery.
Despite these precautions, the patient’s routine can remain almost normal. It is possible to work, go out, and perform light activities. Initial skin recovery usually happens in about five days, when redness and sensitivity decrease significantly.
Acne scar treatment: when do results start to appear?
Right after the procedure, collagen production begins. This process peaks at approximately 45 days and continues progressively for up to six months. Many patients report visible improvement in their skin for up to one year after the session.
This explains why the results are cumulative. With each new application, the skin continues to renew itself and the benefits add up, making scars less and less noticeable.
Progress throughout acne scar treatment
It is very common for patients to begin noticing more significant improvement in skin texture and quality from the second or third month onward. The skin becomes more uniform, firmer, and rejuvenated, contributing to a natural and progressive result.
Can scars come back?
Scars that have already been treated do not come back. Once the skin renews itself and collagen is reorganized, that area remains stabilized. What can happen is the appearance of new scars if the patient experiences a new outbreak of active acne, which is considered rare, especially in people who have already passed the most inflammatory phase of acne.
Having realistic expectations is essential
It is important to emphasize that there is no treatment capable of creating 100% perfect skin. However, the CO2 laser provides visible, significant, and long-lasting improvement. Patients who understand this proposal are usually extremely satisfied with the results.
Many report not only aesthetic improvement, but also a positive impact on self-esteem and on how they see themselves.
Conclusion
Treating acne scars with CO2 laser is one of the most effective approaches currently available. When combined with high-technology equipment and an experienced professional, it provides true skin renewal with progressive and natural results.
If you live with acne scars and wish to improve your skin quality, an individualized evaluation is the first step. Each case is unique, and the treatment plan must be personalized to achieve the best possible results.
Contact
A Clínica de Pele has specialized in dermatological treatments in Rio de Janeiro for over 60 years, since 1969.
Dr. Szerman has more than 20 years of experience and also teaches other physicians.



