Medical beauty review | New discoveries on the anti-aging effects of picosecond laser on collagen cells

2025.05.19

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The application of picosecond laser technology in the field of medical beauty is well known, especially its remarkable effect in removing spots and tattoos. However, in recent years, its outstanding performance in the field of anti-aging has attracted widespread attention in the medical beauty industry. A study found that picosecond laser treatment can increase collagen density by 30%-50%. How did this ultra-short pulse technology, which measures "trillionths of a second", become a "black technology" for anti-aging of collagen cells?


COLLAGEN LOSS

The root cause of skin aging: collagen loss


The root cause of skin aging is the loss of collagen. From the age of 25, the body's collagen begins to slowly lose, which causes the skin to gradually sag and wrinkles to deepen. Traditional anti-aging methods, such as radio frequency and ultrasound, mainly stimulate collagen regeneration through thermal energy, but these methods have problems such as a long recovery period and a high risk of thermal damage. In contrast, picosecond laser has opened up a new path for anti-aging with its "fast, precise and stable" characteristics.


ANTI-AGING MECHANISM

Anti-aging mechanism of picosecond laser


1. Physical damage triggers repair mechanism

The extremely short pulse (10⁻¹² seconds) of the picosecond laser can produce a "laser-induced optical breakdown effect" (LIOB) in the dermis of the skin, forming a tiny cavitation structure. This controllable micro-injury activates fibroblasts, thereby promoting the massive synthesis of collagen and elastic fibers. Studies have shown that this repair response can last for 3-6 months, achieving a gradual firming and lifting.



2Dual stimulation of collagen remodeling

Type I collagen regeneration: Type I collagen, which accounts for 90% of skin collagen, is rearranged under laser stimulation to fill the gaps formed by aging.

Type III collagen activation: The type III collagen rich in young skin proliferates synchronously, making the skin more delicate.


3Advantage of Minimizing Thermal Damage

Compared with traditional nanosecond lasers, the pulse time of picosecond lasers is a thousand times shorter, and the energy is released instantly at the pigment target, reducing the thermal diffusion of surrounding tissues by more than 60%. This means less redness and swelling, and a shorter recovery period, which is particularly suitable for the anti-aging needs of sensitive skin.


Clinical effect: Three-dimensional anti-aging from the epidermis to the deep layer


• Immediate effect (1-7 days)

After treatment, the micro-trauma of the dermis starts the repair process, the epidermal stratum corneum is quickly renewed, and the skin tone is brightened by 1-2 shades.


• Medium-term effect (1-3 months)

Continuous synthesis of collagen, manifested as:

Fine lines reduced by 40%-60%

Pores reduced by 30%-50%

Skin elasticity increased by more than 20%


• Long-term effect (after 6 months)

Through superposition of treatments (usually 3-5 times), the following can be achieved:

Improvement of deep wrinkles such as nasolabial folds and marionette lines

Increase of jawline firmness

Enhancement of skin barrier function


TARGET POPULATION

Applicable population


1. People with mild to moderate skin sagging

2. People with both dynamic and static lines

3. People with large pores and rough skin

4. People who need to maintain collagen after photoelectric projects


CONTRAINDICATED POPULATION

Contraindicated groups


1. People with photosensitivity diseases or taking photosensitizing drugs

2. Women in pregnancy or lactation period

3. People with acute skin inflammation or infection

4. People with coagulation disorders


COLLAGEN LOSS

Future Trends: Advanced Exploration of Picosecond Anti-Aging


The latest technologies, such as holographic diffraction lens technology, can accurately distribute laser energy to different skin layers, and simultaneously solve problems such as spots, wrinkles, and sagging. Picosecond combined therapy (such as with microneedles) can increase the efficiency of collagen regeneration by 2-3 times.


The anti-aging value of picosecond laser lies not only in its "speed", but also in its biological regulation wisdom - activating the self-healing power of the skin with minimal damage, and realizing the natural aesthetics of "healing is anti-aging". But remember: even the most advanced technology requires professional doctors to formulate plans based on individual differences, and scientific anti-aging can achieve twice the result with half the effort.


Foremed Legend


The core founding team of Suzhou Foremed Legend Medical Technology Co., Ltd. comes from well-known universities at home and abroad such as Peking University. Foremed Legend focuses on the design, development and application of high-end medical aesthetic optoelectronic equipment based on compliance and product strength, and is committed to becoming a leading company in the field of high-end medical aesthetic optoelectronic equipment, a provider of integrated diagnosis and treatment intelligent solutions, and a pioneer of medical aesthetic data integration platform.

Through tackling a series of underlying key technologies, Foremed Legend has now independently developed a number of high-end medical equipment such as picosecond laser therapy devices, long pulse laser therapy devices, intense pulsed light therapy devices, photoacoustic imaging skin detection devices and cold air therapy devices, and continues to deepen the research and development of core product technologies, using better technical solutions to benefit the vast number of beauty seekers.

Adhering to the principle of technology for good, Foremed Legend will work with industry and ecological partners to bring more safe and effective medical aesthetic optoelectronic equipment and integrated diagnosis and treatment solutions to the global medical aesthetic market.


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