Laser Therapy
Principle: By altering the focusing characteristics of the laser, the laser point is transformed into a light spot. Then, using a graphics generator, the light spot is scanned in a certain pattern, allowing the high heat generated by the laser to remove the target tissue within the scanned area instantly.
Disadvantages: It can only remove raised skin and cannot fill in depressed areas. Improper use of the laser may cause scars or uneven pigmentation, such as spots or white patches.
Collagen Injection
Principle: Highly refined bovine collagen is used, with an anesthetic added, and then injected into the dermis layer to promote the body's "fusion" of the collagen. To verify whether collagen injection can help eliminate acne scars, place a finger on one side of the scar and push the skin. If the scar disappears, you are likely a suitable candidate for this treatment method.
Disadvantages: Risk of allergy; an allergy test must be conducted before the procedure.
Fat Injection Method
Principle: Fat is obtained from another part of the body through surgical procedures, cleaned, and then injected into the scarred area to increase fat content around the scar.
Disadvantages: Currently, the failure rate of fat transplantation is relatively high, requiring multiple transplants.
Chemical Peeling
Principle: Chemical agents such as phenol acid, trichloroacetic acid, or alpha-hydroxy acids are applied to the scarred skin surface, removing the uppermost layer of skin cells. After the scarred skin peels off, fresh and tender skin will appear.
Disadvantages: Can alter skin color; not suitable for most Asians.
Dermabrasion
Principle: A coolant is applied to the affected area to numb the skin, then a rotating instrument is used to grind down the skin, making the skin surface smoother.
Drawbacks: Prone to bleeding and pain, leading to rougher skin; skin may darken after sun exposure.
Many advertisements claim that lavender essential oil can dilute scars, but doctors say its effects on old scars and those less than 8 years old are not significant. I've also heard that rubbing slices of ginger on scars can inhibit granulation tissue growth. I tried it once, and it was very irritating to the skin. Home remedies should not be used indiscriminately; it's best to consult a doctor.
Fraxel Laser: Fraxel Laser is designed based on the concept of total skin resurfacing. Increasing domestic therapeutic experiences show that it has quite good results for treating acne scars. The Fraxel Laser uses a special probe to split the laser light into very fine beams. During the treatment process, it creates up to 125-250 microscopic points per square millimeter on the skin surface, which are finer than hair. When the laser penetrates the skin, it destroys part of the epidermis and dermis layers, stimulating the growth of new collagen. Since the outermost stratum corneum remains intact, it protects the upper skin tissues, causing almost no injury, and avoids the issues of tissue fluid leakage or bleeding that traditional laser skin resurfacing might have. There’s a short recovery period, with potential side effects like mild redness or slight discoloration. Because only a portion of the skin is treated with each session, 5-6 treatments are needed to effectively improve acne scars. For patients who want to undergo laser skin resurfacing but are concerned about side effects, this is a good option.
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