Laser pigmentation treatment uses Q-Switched technology to eliminate hyperpigmentation, sun spots, age spots, and lentigines by fragmenting melanin pigment into microparticles that are then naturally reabsorbed by the body. This technology emits extremely short and powerful light pulses (in the nanosecond range) that selectively target excess melanin without damaging surrounding tissue. It is a safe, precise treatment with long-lasting results.
The laser emits high-energy light pulses with a specific wavelength that is selectively absorbed by melanin present in the spot. Light energy is converted into thermal energy that fragments the pigment into microparticles, which are progressively eliminated by immune system macrophages through the lymphatic system. The principle of selective photothermolysis ensures that only the target pigment is affected, fully preserving the surrounding skin.
There are different types of treatable spots with the Q-Switched laser: • Sun spots (solar lentigines): the most common, caused by cumulative sun exposure over the years, appearing as brown patches on the face, hands, and décolleté • Age spots (senile lentigines): related to skin aging and chronic photodamage, typical after age 50-60 • Melasma: hormonal hyperpigmentation presenting as symmetrical patches on the face, often linked to pregnancy or contraceptive use • Freckles: genetically determined lentigines that become more prominent with sun exposure
• Sun spots on the face, hands, and décolleté that do not respond to topical lightening treatments • Age spots that give an aged and uneven appearance to the skin • Widespread freckles that the patient wishes to soften for a more uniform complexion • Post-inflammatory hyperpigmentation, resulting from acne, dermatitis, or skin trauma that leaves persistent dark marks • Seborrheic keratoses and other benign pigmented lesions, following dermatological evaluation
• Recent tan or sun exposure in the previous 4-6 weeks, as sun-activated melanin increases the risk of paradoxical hyperpigmentation • Pregnancy and breastfeeding, as a precautionary principle • Very dark skin type (Fitzpatrick V-VI), due to the high risk of post-treatment discoloration • Use of photosensitizing medications such as tetracyclines, fluoroquinolones, or oral retinoids • Suspicious or undiagnosed skin lesions, which require thorough dermatological evaluation first
The treatment takes 15-30 minutes depending on the number and extent of spots being treated. After the session, a light dark crust forms on the treated spot, representing the fragmented pigment brought to the surface. Complete healing requires 7-10 days, during which the crusts detach spontaneously, revealing lighter and more even skin underneath. It is important not to remove the crusts manually and to protect the area from the sun.
Generally no anesthesia is needed: the sensation during treatment is comparable to a mild elastic snap on the skin, well tolerated by most patients. For particularly sensitive areas such as the eye contour or for extensive spots, a topical anesthetic cream can be applied 20-30 minutes before the session to improve comfort. The treatment is quick and discomfort is limited to the duration of the laser pulse.
Results are visible after the natural shedding of crusts, which occurs in 7-10 days: the skin appears lighter and more even in the treated area. The final result is appreciated after 3-4 weeks, the time needed for complete reabsorption of the fragmented pigment. Some deeper or more resistant spots may require 2-3 sessions spaced 4-6 weeks apart for optimal results.
Laser-treated spots do not return, as the excess pigment is permanently eliminated. However, skin prone to spot formation may develop new ones if exposed to sun without adequate protection. It is essential to apply SPF 50+ sunscreen daily in the weeks following treatment and to adopt consistent photo-protection as a lifestyle habit to prevent the appearance of new hyperpigmentation.
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