Intense pulsed light (IPL), also known as pulsed strong light, is a broad-spectrum light formed by focusing and filtering a high-intensity light source. Its essence is incoherent ordinary light rather than laser. The wavelength of IPL is mostly between 500-1200nm. IPL is one of the most widely used phototherapy techniques in clinical practice and holds a very important position in the field of skin beauty. IPL is widely used in the treatment of various skin diseases, especially those related to photodamage and photoaging, namely the classic Type I and Type II skin rejuvenation.
Type I skin rejuvenation: IPL treatment for pigmentary and vascular skin diseases. Pigmented skin diseases include freckles, melasma, sunspots, freckle like nevi, etc; Vascular skin diseases, including telangiectasia, rosacea, erythematous nevi, hemangioma, etc.
Type II skin rejuvenation: It is an IPL treatment for diseases related to changes in the structure of dermal collagen tissue, including wrinkles, enlarged pores, rough skin, and small concave scars left by various inflammatory diseases such as acne and chickenpox.
IPL can be used to treat photoaging, pigmentary skin diseases, vascular skin diseases, rosacea, telangiectasia, freckles, hair removal, and acne.
The theoretical basis for IPL treatment of skin diseases is the principle of selective photothermal action. Due to its broad spectrum, IPL can cover multiple color bases such as melanin, oxidized hemoglobin, water, and other absorption peaks.
When treating vascular skin diseases, hemoglobin is the main chromophore. The light energy of IPL is selectively absorbed by oxygenated hemoglobin in the blood vessels and converted into heat energy to heat up the tissue. When the pulse width of the light wave is less than the thermal relaxation time of the target tissue, the blood vessel temperature can reach the damage threshold of the blood vessel, which can coagulate and destroy the blood vessel, leading to vascular occlusion and degeneration, and gradually being replaced by microscopic tissue to achieve the therapeutic goal.
When treating pigmentary skin diseases, melanin selectively absorbs the spectrum of IPL and produces an "internal explosion effect" or "selective pyrolysis effect", which can destroy melanocytes and shatter melanosomes.
IPL improves skin condition such as sagging, wrinkles, and enlarged pores, mainly through its biological stimulation effect. The treatment of acne mainly utilizes photochemical and selective photothermal effects.
Post time: Dec-24-2024
