6 Questions Most Frequently Asked About Laser

Cutting-edge laser treatments and evidence-based solutions are at the heart of Self London, the luxe space set up by Consultant Dermatologist, Dr Anjali Mahto, earlier this year. Part of Dr Mahto’s mission was to demystify lasers and introduce more people to the next-level results the right laser on the right patient can offer. With this in mind, Dr Mahto has answered the 6 most frequently asked laser questions she gets in the clinic. 

What is a laser? 

A laser is a highly focused and intense beam of light used in various skincare treatments. It delivers precise energy to target specific skin concerns, such as sun damage, wrinkles, and pigmentation irregularities. By stimulating collagen production and promoting skin regeneration, lasers can rejuvenate and improve the overall texture and appearance of the skin. They are a popular non-invasive or minimally invasive option, offering effective results with minimal downtime. 

How does a laser work? 

A laser works by emitting a concentrated and coherent beam of light at a specific wavelength. When the laser light interacts with the skin, it targets and heats up specific skin structures, such as pigment, blood vessels or water, depending on the treatment goal. This controlled energy absorption triggers a response in the skin, stimulating collagen production and promoting skin rejuvenation. The targeted hearing encourages cell renewal, improving skin texture and addressing various concerns like wrinkles, sun damage, and pigmentation. With its precision and efficacy, lasers offer effective and tailored solutions for a wide range of skincare issues. 

What’s the difference between ablative and non-ablative lasers? And how do I know which one I need? 

The main difference between ablative and non-ablative lasers in dermatology lies in the depth of penetration and the extent of skin removal during treatment. Ablative lasers remove the outer layers of the skin, creating controlled injuries that stimulate collagen production and skin rejuvenation. This type of laser is more aggressive and is typically used for treating deep wrinkles, scars or sun damage. Non-ablative lasers, on the other hand, target the underlying layers of the skin, without removing the surface. They are less invasive, with shorter recovery times, making them suitable for mild wrinkle, pigmentation and overall skin tightening. Both ablative and nonablative lasers offer effective solutions for various skin concerns, but the choice depends on the individual’s specific needs and desired outcomes. 

What is a fractional laser? 

The main difference between fractional and cofluent lasers lies in how they deliver energy to the skin. Fractional lasers create tiny, evenly spaced microthermal zones, leaving surrounding skin unaffected. This promotes faster healing and minimal downtime, making them ideal for treating fine lines, scars and pigmentation. Cofluent lasers, on the other hand, deliver a continuous beam of energy over the entire treatment area, affecting a larger surface area but with more downtime. They are better suited for more extensive skin resurfacing and for treating deeper wrinkles and scars. The choice between the two depends on the specific skin concerns and the desired results. 

Is laser painful?

Laser treatments can cause varying degrees of discomfort, but more patients report only mild sensations during the procedure. The level of discomfort depends on the type of laser used, the patient’s pain tolerance, as well as the treatment area. Non-ablative and fractional lasers typically cause minimal discomfort, akin to a sunburn sensation. However, at Self London, we apply a topical anaesthetic cream to minimise discomfort where necessary, and the procedure is generally well-tolerated. Post-treatment, patients might experience mild redness or sensitivity, which usually subsides within 2-7 days, depending on the type of treatment. 

Is laser safe for skin of colour? 

Laser treatments for skin of colour require special considerations due to a higher risk of complications like hyperpigmentation and hypopigmentation. The melanin in darker skin can absorb more laser energy, increasing the risk of adverse reactions, and so pre-treatment assessment is crucial to select appropriate lasers and settings. Cooling measures and test spots may also be performed to minimise risks. Post-treatment, strict sun protection and specialised skincare may be recommended to prevent pigmentation issues. Skilled dermatologists with expertise in treating diverse skin types ensure safe and effective laser treatments for individuals with skin of colour.