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The effects of photorejuvenation: whitening and fading spots, brightening skin tone; improving skin smoothness and fineness, and improving skin elasticity (regenerating collagen); contracting and sealing blood vessels (reducing redness, sealing red blood streaks); anti-inflammatory and soothing (low-energy light modulation effect); hair removal; acne and anti-inflammatory (ACNE or 420nm filter).
1. Pigmented hyperplastic lesions
The target color bases such as melanin, hemoglobin, and water in the skin can absorb the corresponding bands in strong light to achieve the purpose of reducing pigment spots and hair.
2. Vascular proliferative lesions
The blood flowing in the blood vessels, that is, hemoglobin, has color. IPL of a specific band can be strongly absorbed by hemoglobin. When the temperature rises to a certain level, it causes the vascular endothelium and the wall protein to contract, denature, coagulate, and even necrotize, the vascular cavity is closed, and gradually replaced by fibrous tissue, ultimately achieving the purpose of removing redness and sealing blood vessels.
3. Hypertrichosis and hirsutism
Use intense pulsed light with a certain penetration depth and a wavelength that can have good absorption capacity in melanin, so that the hair bulb and hair shaft that have been irradiated by light absorb a large amount of light energy, generate heat through energy conversion, and transmit to the end of the hair bulb through the protein in the hair, so that the whole hair is heated, the protein and cells produce coagulative necrosis, and finally the necrosis of the growing cells causes the whole hair to fall off.
The working principle of photons includes the principles of "selective photothermal effect" and "extended selective photothermal effect".
1. Selective photothermal effect:
Consistent with the principle of laser treatment, specific target tissues in the skin absorb light of specific wavelengths, causing tissue blasting, abscission, and absorption to achieve the purpose of treatment. Because IPL is a wide spectrum, it can cover multiple absorption peaks of multiple color bases such as melanin, oxyhemoglobin, water, etc., so intense pulsed light has multiple therapeutic effects.
2. "Extended selective photothermal effect"
It means that the heat generated by the selective photothermal effect after the target color base absorbs light is diffused to the target tissue and destroys the target tissue, thereby achieving the therapeutic effect. Typical examples of "extended selective photothermal effect" are hair removal and blood vessel occlusion. Intense pulsed light can be absorbed by the melanin (target chromophore) of the hair follicles, and through thermal diffusion, it destroys the hair follicle stem cells (target tissue) to achieve the purpose of hair removal. Similarly, intense pulsed light can be absorbed by the hemoglobin (target chromophore) in the blood vessels, and through thermal diffusion, it destroys the blood vessel wall (target tissue) to achieve the purpose of blood vessel occlusion.
Whether photons have photomodulation effect
is still controversial. Low-energy light acts on the skin, and theoretically there is a photomodulation effect. Photomodulation mainly works by regulating cell function. For photons, we know that it mainly works through selective photothermal effect. However, when photothermal effect is dominant, cells may be damaged, and cells lose function, and the photomodulation effect cannot be exerted. Therefore, photons only have a photomodulation effect when the skin has no heat sensation at the lowest energy, the mildest parameters. It is mainly used to treat facial inflammatory skin diseases such as sensitive skin, hormone-dependent dermatitis, and rosacea.
The operation process of photorejuvenation
1. Cleansing: Do not wear makeup on the day of treatment. If you use sunscreen, isolation and other skin care products, you need to use facial cleanser to clean the entire face.
2. Since the photorejuvenation device emits strong light, direct or indirect viewing may cause eye discomfort. Even damage. Therefore, when receiving treatment, the beauty seeker needs to wear a light-shielding eye mask. The doctor also needs to wear professional light-shielding glasses.
3. Before the treatment begins, you need to apply a special photon gel on the face or treatment area. The main purpose of the gel is to reduce pain and burning sensation. Second, as a light conductor, it is essential in the photorejuvenation operation.
4. The entire operation process takes about 10 minutes, and the time varies depending on the skin type and treatment purpose.
5. After the treatment, clean the gel with cold water, and apply a medical mask and a cold spray for 20 minutes.
6. If you are seeking hair removal, you do not need to shave your hair before coming, because the doctor will adjust the photon treatment dose according to the distribution of hair growth.