Tip #3: Proper technique and close follow-up
The most expensive laser in the world still relies on good technique during deployment, she said. “I always stress, do not ‘pulse stack.’ Use side-by-side, nonoverlapping passes.”
Another key for success is to avoid using the laser on any tanned skin, or skin that will soon have sun exposure. “Any skin phototype with recent sun exposure has activated melanocytes and will have a higher tendency to develop postinflammatory hyperpigmentation. The cells are already activated and in the presence of any other damage – including a laser – they are programmed to produce more pigment.”
Individualize your treatment plan, she advised. “Do additional passes on the most severe areas, like cheek scars and perioral rhytides, and fewer passes and lower density on scar-prone areas, like the infraorbital area, mandible neck, and chest.”
Tip #4: Recognize and address complications
“Complications run the full spectrum from mild erythema to disseminated infections. I am always careful to figure out if it’s a true complication or an expected side effect. The greatest risk profiles are patients with darker skin phototypes, treatments in more sensitive areas, and patients with predisposing medical conditions like collagen or vascular diseases. You don’t need to avoid treating them, just be prepared for the higher risks.”
Dr. Alster also shared her techniques for managing some of the more common adverse events following a fractional laser procedure.
Prolonged erythema isn’t clinically serious, but it really bothers patients. They should be counseled to avoid putting any potentially irritating or allergenic product on their face, and that includes chemical sunscreens. A mineral sunscreen is a much better choice. “For management, postoperative cooling with ice packs is important. A mild topical corticosteroid and a nonsteroidal anti-inflammatory can help, too.”
Acne exacerbation is not uncommon, especially among patients being treated for acne scars. “In people who are prone to acne, I write a script for doxycycline. They don’t have to take it unless they break out. And I always avoid laser skin resurfacing in active acne.”
If a breakout does happen, stick to the well-trodden path, she advised. “We know how to treat acne. Discontinue any occlusive topical, start the patent on an antibiotic, treat topically with a clay masque to help dry things out.”
Infections can be alarming but are manageable when promptly treated. “The main thing is to diagnose and treat early. In those patients who are proven to have herpes simplex virus, I give an antiviral, like valacyclovir. I give 1 gram twice a day for a week, starting on the day of the procedure. I think a bigger question is, ‘Does everyone need a prophylactic antibiotic?’ There is probably no reason to start one routinely, and in fact, there is some evidence that if you do, you may get a more pathogenic organism if you do get an infection.”
Hyperpigmentation is always a concern. Dr Alster repeated her cardinal rule: Do not use the fractional laser on tanned skin or skin that will be getting sun exposure soon after the treatment, as melanocytes are already activated and ready to deposit pigment. Use strict posttreatment sun protection with a mineral sunscreen. While she is not “a big fan” of hydroquinone, Dr. Alster does employ other bleaching agents for postoperative hyperpigmentation, including alpha hydroxyl acid, retinoic acid, kojic acid, and lignin peroxidase.