IPL treatment for skin pigmentation and blood vessels: understanding it correctly

In recent beauty ads, the term "IPL" is used extensively, accompanied by alluring promises like "remove dark spots in one go," "instantly lighten your skin," or "treat all brown spots." Meanwhile, many customers report darker spots after treatment at unqualified facilities. How true is this high-intensity pulsed light (IPL) technology? Who is suitable for it, and why do dermatologists always emphasize the words "cautious" when discussing hyperpigmentation? This article will help you understand its true nature.

What is IPL and how does it work?

IPL is not a laser; many people confuse it. While lasers emit a single light wave, IPL emits a broad spectrum of light (typically between 500 to 1200 nanometers), similar to a high-intensity flash lamp with wavelength filtering. This light energy is absorbed by the "targets" carrying color: melanin (brown pigment) and hemoglobin (red blood vessels).

When light is absorbed by melanin or hemoglobin, it converts into heat, causing targeted structures to be damaged while minimizing damage to surrounding tissues, a principle known as selective photothermolysis. Hyperpigmentation spots may darken, form small lumps, then flake off; small blood vessels can relax and fade. This is why IPL falls into the "light therapy" category rather than an invasive procedure.

Relatively clear indications for IPL

IPL has been researched and applied to certain skin conditions. Common dermatological indications include:

• Hyperpigmentation due to sun exposure: brown spots, freckles, and solar lentigines (age spots) typically respond well.
• Minor blood vessel damage: dilate small veins, redness of rosacea in the early stages, certain types of facial and neck redness.
• Skin rejuvenation by photorejuvenation: improve overall uneven skin tone, make skin look smoother and more youthful.
• Support for other conditions: such as port-wine stains on the neck (hyperpigmentation due to sun exposure) in combination therapies.

A key point to note: IPL effectiveness depends significantly on the type of damage, depth of pigmentation, skin tone, and the skill of the practitioner. Results often require multiple treatments (typically 3-5 sessions spaced a few weeks apart), and not everyone responds equally.

Benefits and limitations that need to be seen straight

In terms of benefits, IPL has advantages such as short downtime, ability to treat both pigmentation and blood vessels in some cases, and wide treatment area suitable for areas like the forehead, neck, chest, hands. For sun-induced brown spots on fair skin, results can be clearly observed.

However, limitations also need to be acknowledged:

• IPL is not a permanent solution. Pigmentation may recur if the skin continues to be exposed to sunlight without protection.
• Evidence for IPL in treating melasma is still controversial; many studies suggest the risk of worsening hyperpigmentation outweighs the benefits.
• Effectiveness on tanned skin is limited, and the risk of adverse reactions increases due to melanin absorbing energy unintentionally.
• "Full-body whitening" or "remove dark spots in one go" are exaggerated advertising claims that do not reflect the actual mechanism and medical data.

Why should IPL be treated with caution for hyperpigmentation?

Melasma is a chronic pigmentation disorder influenced by hormones, sunlight, genetics, and blood vessel factors. This is the "sensitive area" when it comes to IPL. Heat generated during treatment can stimulate pigment-producing cells to work harder, leading to post-inflammatory hyperpigmentation (PIH) or darkening and spreading of hyperpigmentation, especially in Asian skin that easily reacts to pigmentation.

For this reason, many dermatologists view hyperpigmentation as a condition that requires careful consideration, often prioritizing non-invasive approaches first (strict sun protection, pigment-stabilizing creams, hormone control if applicable) and using light/laser devices cautiously with low energy after thorough evaluation. A treatment plan suitable for one person may be harmful to another.

Safe use and local factors

The safety of IPL depends greatly on accurate skin assessment and contraindication identification. Some points to check before treatment:

• Skin type according to the Fitzpatrick scale: darker-skinned individuals have a higher risk of sunburn, loss of pigment, or increased pigmentation.
• Past history and current condition: pregnant women, those on light-sensitive medications (such as certain antibiotics, isotretinoin), exposed to sunlight, suspected malignant lesions, or history of raised scars.
• Post-treatment care: strict broad-spectrum sun protection is mandatory to avoid reversing results.

Potential unwanted effects may include redness, mild swelling that subsides quickly, lumps; more severe outcomes can be sunburn, pigment disorders, or scarring if performed incorrectly or on unsuitable skin. This is why direct consultation with a dermatologist and choosing a reputable facility with certified equipment are crucial, not replaceable by online advice or advertising promises.

Dr. Vo Thanh Sang's Perspective

IPL is a valuable light therapy tool when used correctly, particularly for sun-induced brown spots and some minor blood vessel damage. But it is not the "magic key to everything," and should not be considered the first choice for hyperpigmentation. In practice, I always prioritize accurate diagnosis and assessment of the lesion before using any equipment, as the same spot on skin can be freckles, lentigines, or hyperpigmentation, each requiring different treatment approaches.

True advice: be cautious with all ads promising "instant whitening" or "remove dark spots in one go." Real results depend on individual skin type, specific treatment plan, and need to be monitored over time. If you are uncertain about pigmentation or blood vessel issues on your skin, consult directly for a proper assessment before deciding on any treatment.

To receive consultation and examination by a specialist, contact the hotline 079 7479 222. The information in this article is for reference only and does not replace direct medical diagnosis and prescription.