In the field of skin aesthetics, flawless skin is the goal pursued by many people. However, the appearance of various spots often breaks this beautiful vision, among which freckles are more common on the face, causing trouble for many people. Among the many methods of removing freckles, photon and laser technologies have attracted much attention. A deep understanding of their principles, advantages and applicability is crucial to making scientific choices.

TECHNICAL ANALYSIS
Analysis of Photon Freckle Removal Technology

Photon freckle removal is professionally known as intense pulsed light (IPL) technology. The principle is to use strong pulsed light of a specific wavelength. When these lights act on the skin, different pigment particles absorb light to different degrees. The pigment particles in freckles will preferentially absorb photon energy, and then be decomposed and gradually fade away.

Unlike laser light of a single wavelength, photons contain multiple light sources and cover a wider spectrum. This characteristic gives photons a multi-faceted effect on the skin. In addition to fading freckles, it can also work on multiple levels of the skin: 1. Improve pigmentation It can effectively lighten a variety of pigment spots, not just freckles, but also has a certain improvement effect on other types of pigmentation. 2. Enhance skin elasticity By stimulating the collagen fibers and elastic fibers in the skin, it promotes their regeneration and rearrangement, increases skin elasticity, and makes the skin tighter. 3. Improve skin texture It helps to eliminate fine wrinkles, and has a significant improvement effect on facial capillary dilation, enlarged pores, and rough skin. It can also adjust the yellow skin color and improve the brightness and uniformity of the overall skin color. However, the energy of photons is lower than that of lasers. When facing some extremely stubborn freckles with darker pigmentation, photon freckle removal may be difficult to achieve the ideal treatment effect, and laser-assisted treatment is often required at this time. But for most common freckles, the effect of photon freckle removal is relatively reliable.

Advantages of photon freckle removal

Photons can accurately act on the sebaceous glands of the skin. Through specific photothermal and photochemical effects, the secretion activity of the sebaceous glands is regulated, and the excessive secretion of oil by the sebaceous glands is inhibited, thereby effectively improving the state of oily skin, keeping the skin fresh, and reducing skin problems such as acne caused by excessive oil secretion.

Photons have a certain penetrating ability and can penetrate deep into the skin and reach the root of the hair follicles. The melanin in the hair follicles absorbs the energy of photons, produces a thermal effect, destroys the hair growth center, prevents the growth of hair, and achieves the effect of skin hair removal. This is an additional advantage for those who want to remove freckles and hair at the same time.

Photons can penetrate the surface of the skin without damage and are selectively absorbed by the pigment clusters in the tissue and the hemoglobin in the blood vessels. Without destroying normal tissue cells, the photothermal effect is used to destroy and decompose dilated blood vessels, pigment clusters and pigment cells. This precise mechanism of action allows photons to effectively remove red blood streaks and improve the color and texture of the skin while removing freckles and whitening.

When photons act on skin tissue, they will induce photothermal and photochemical effects. These two effects synergistically stimulate the regeneration and rearrangement of collagen fibers and elastic fibers, restore the elasticity of the facial skin, reduce the formation of wrinkles, shrink pores, improve the firmness and glossiness of the skin, and achieve the effect of skin anti-aging and rejuvenation.

Analysis of laser freckle removal technology

Laser freckle removal is based on the high energy characteristics of lasers and the theory of selective photothermal effect. Lasers can generate monochromatic beams with high energy density, and lasers of specific wavelengths will be selectively absorbed by the corresponding colors or pigments in the skin. Taking Q-switched lasers as an example, it achieves rapid accumulation and instantaneous release of laser energy by regulating the "quality factor switch" in the laser resonant cavity. In the extremely short nanosecond (ns, 1ns = 10⁻⁹ seconds) pulse duration, the output of laser pulses with extremely high peak power greatly enhances the destructive effect on pigment particles.

Common wavelengths of Q-switched lasers include 1064nm, 532nm, etc. 1064nm wavelength laser has strong skin penetration ability, can act on deep skin tissue, and has good absorption characteristics for black and blue pigments; 532nm wavelength laser has shallow penetration depth, mainly acts on the shallow layer of skin, and has higher absorption specificity for red and brown pigments. The main component of freckles is melanin, which has good absorption of the specific wavelength energy of Q-switched laser. When the Q-switched laser irradiates the freckles, melanin quickly absorbs the laser energy, causing the local temperature to rise sharply in an instant, forming a strong photomechanical shock wave. This shock wave can instantly break the pigment particles into extremely small fragments, greatly increase the surface area of the pigment particles, and improve the dispersion. Then, the macrophages in the human immune system recognize and engulf these pigment fragments, transport them to the liver and other organs through the lymphatic circulatory system for metabolic decomposition, and finally excrete them from the body, thereby gradually achieving the fading and elimination of freckles.

ADVANTANGE POINTS
Advantages of laser freckle removal

One of the significant advantages of laser freckle removal is its extremely high precision. It can accurately target freckles, and can achieve significant therapeutic effects on sensitive skin parts such as eyelids, which are more difficult to operate, as well as light yellow freckles that are lighter in color and difficult to handle, to achieve precise freckle removal and minimize the impact on the surrounding normal skin.

The laser has the principle of selective photothermal action, which can selectively heat, rupture, coagulate and wither the pigments and pigment cells in the freckles. While destroying the freckle tissue, it causes minimal damage to the normal skin around the freckles. This characteristic ensures that after removing freckles, the skin is not easy to leave ugly scars, and the postoperative recovery effect is ideal. Under normal circumstances, most patients only need 1-2 treatments to achieve satisfactory results.

Laser freckle removal surgery can not only effectively remove facial freckles and blemishes, but also stimulate the proliferation of skin collagen and improve skin texture with the help of the photothermal and photochemical effects of lasers. While removing freckles, it can also whiten the skin and eliminate fine wrinkles, making the skin smoother, more delicate, and elastic, improving the overall skin condition.

Laser freckle removal surgery is easy to operate and does not require hospitalization, which greatly saves patients' time and energy. During the operation, the incision is tiny, there is almost no bleeding, the trauma to the skin is very slight, the recovery is fast, and it is not easy to leave scars, which will not have a major impact on the patient's daily life and work.

How to choose the method that suits you

Whether to choose photon or laser freckle removal requires comprehensive consideration of many factors:

If it is ordinary, lighter in color and more evenly distributed freckles, photon freckle removal can usually achieve good results; while for those darker, more stubborn freckles that have not been effectively treated with multiple photon treatments, laser freckle removal may be more suitable.

If in addition to freckles, there are also rough skin, large pores, red blood streaks and other problems, the comprehensive advantages of photon freckle removal can be better utilized; if the overall skin condition is good, only freckles exist, and fast and accurate freckle removal is sought, laser freckle removal is a better choice.

Before deciding to undergo freckle removal treatment, it is recommended to go to a regular medical institution and consult a professional dermatologist or medical aesthetic doctor. The doctor will develop a personalized treatment plan based on the individual's skin condition, freckle characteristics and needs to ensure that the ideal freckle removal effect is achieved safely and effectively.

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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, research and development and application of high-end medical beauty optoelectronic equipment based on compliance and product strength, and is committed to becoming a leading enterprise in the field of high-end medical beauty optoelectronic equipment in the world, a provider of integrated intelligent solutions for diagnosis and treatment, and a pioneer of medical beauty 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 using technology for good, Foremed Legend will work with industry and ecological partners to bring more safe and effective medical beauty optoelectronic equipment and integrated diagnosis and treatment solutions to the global medical beauty market.