Hello, I am Doctor LEE Dongmin of Ruby Dermatology Clinic.

"I received laser toning for a long time due to melasma, but even with minimal stimulation, it quickly darkens again or becomes blotchy." This is a common grievance I hear from patients with intractable melasma in the consultation room.

Many people view melasma simply as "dark pigment on the surface" and focus solely on destroying the pigment. However, melasma is a complex condition involving hyper-reactive signals from melanocytes intertwined with red vascular proliferation in the dermal layer. Only by treating the underlying microvessels beneath the melasma and applying safety nets to prevent laser side effects can you achieve stable, clear skin.

💡 3-Line Key Takeaways

• Step-by-Step Wavelength Approach: Superficial epidermal pigment is cleared first using specialized lasers (532nm, 755nm), while deep dermal melasma is precisely targeted with Pico Zoom, MLA, and vascular lasers.
• Importance of Vascular Treatment: Dilated microvessels underneath melasma continuously stimulate melanocytes; thus, vascular response must be blocked via vascular lasers and melasma injections to prevent root recurrence.
• Safety Lock Function of Melasma Injection (TXA): Tranexamic acid (TXA) inhibits melanin synthesis, post-inflammatory hyperpigmentation (PIH), and hypopigmentation (vitiligo-like response), acting as a buffer and synergistic accelerator during strong specialized laser therapy.

A. From Superficial Blemishes to Deep Melasma: Step-by-Step Laser Wavelength Design

Melasma and pigmentation are distributed at various depths ranging from the skin surface to deep within the dermis. Therefore, rather than repeating a single laser, a wavelength layering treatment tailored to specific depths is essential.

• Step 1 (Clearing Superficial Epidermal Pigment): Specialized 532nm and 755nm lasers are utilized to preemptively clear superficial blemishes, freckles, and light pigments on the skin surface.
• Step 2 (Precision Treatment of Deep Dermal Melasma & Mottled Redness): Pico Zoom and MLA tips are used to finely shatter deep-seated intractable melasma particles, while vascular lasers are applied simultaneously to smooth out the reddish, mottled underlying tissue.

B. Breaking Pigment Isn't Enough: Why "Vascular" Treatment Is Essential for Melasma

The primary reason melasma rapidly recurs or darkens even after laser treatment is the "red microvessels beneath the melasma."

Inspecting the dermal layer of a melasma lesion reveals abnormally developed, tangled red blood vessels. These vessels secrete vascular endothelial growth factor (VEGF) and inflammatory mediators, continuously stimulating adjacent melanocytes. In other words, if you only shatter the pigment with lasers while leaving the underlying vessels unattended, signals from those vessels will cause melanocytes to produce pigment all over again.

Therefore, abnormal vessels must be directly targeted using vascular lasers, or vascular proliferation must be suppressed via melasma injections to cut off the source of melanocyte stimulation.

C. Safety Lock Against Laser Side Effects: Mechanism of 'Melasma Injection (Tranexamic Acid)'

When performing specialized laser procedures with high energy levels, stimulated skin may develop post-inflammatory hyperpigmentation (PIH) or, conversely, hypopigmentation (vitiligo-like loss of color). Melasma injections (TXA) serve as a crucial "safety lock" to prevent these complications.

• Main Ingredient: Tranexamic Acid (TXA)
• Inhibition of Plasminogen Activation: Fundamentally blocks melanocyte stimulation signals.
• Simultaneous Blockade of Inflammatory and Vascular Signals: Suppresses inflammatory mediators (PGE2) and vascular growth factors (VEGF, bFGF) to prevent melanocyte hyper-reactivity and neovascularization.
• Synergistic Effect: Combining specialized laser treatments with melasma injections significantly lowers the incidence of laser-induced PIH and facilitates stable pigment excretion.

D. Evaluating Treatment Progress with Precision Skin Diagnostics (Natural, Polarized, & UV Light)

Even if pigmentation appears faint on the surface, residual pigment often remains deep in the dermis. Ruby Dermatology Clinic monitors treatment progress three-dimensionally using a precision diagnostic system.

• Natural Light: Evaluates overall skin tone uniformity and improvement in superficial pigment.
• Polarized Light: Removes surface reflection to verify improvement in reddish tones and tangled microvessel distribution beneath melasma.
• UV Light: Confirms the reduction of deep melasma pigment and melanocyte activity hidden within the deep dermis.

(Tip: When combined with expression-wrinkle care such as glabella Botox, smoothing out frown lines clears up shadows around the upper eyelid area, creating a brighter and clearer overall impression.)

E. Summary Comparison of Melasma & Vascular Treatments

F. 🔥 Injection Combinations to Maximize Pigment Treatment Efficacy

• Melasma Injection (TXA): The essential foundation of pigment treatment, suppressing melanin synthesis and vascular recurrence.
• Cinderella / Glutathione Injection: Provides strong antioxidant action to inhibit the melanin synthesis pathway and eliminate reactive oxygen species.
• PDRN / Rejuran Healer: Restores the sensitive dermal barrier environment disrupted by laser stimulation and strengthens the basement membrane to prevent melanocytes from dropping into the lower dermis.

G. Doctor LEE Dongmin's Practical Expertise & Clinical Insights

Treating intractable melasma should not be a "race against time" focused on ramping up energy to shatter pigment quickly; rather, it must be a "precision battle" that soothes both vessels and pigments while minimizing skin irritation.

Before treatment, I analyze polarized and UV diagnostic images to determine whether the condition is vascular melasma or simple pigmentary melasma. I then meticulously adjust wavelength-specific lasers to address the pigment while precisely administering TXA melasma injections directly beneath the lesion. Harmonizing laser and injection therapies in this way achieves truly transparent skin from within, free from concerns about darkening or hypopigmentation.

📌 [Post-Care] Precautions Before & After Treatment

• Avoid Irritation: Refrain from aggressive rubbing, harsh physical scrubs, or excessive use of home care beauty devices during the treatment period.
• Strict Sun Protection: UV light is the primary trigger for both melanocyte activity and vascular dilation. Sunscreen should be applied daily regardless of outdoor activities.
• Ample Hydration: Apply sufficient moisturizing cream to support skin regeneration post-treatment, and supplement with Vitamin C for optimal results.