Pigmented Lesions Treatment (Pinpoint Coagulation™)

Pinpoint Coagulation™ is LINLINE’s selective method for treating melanin-based pigmented lesions on the MULTILINE™ base unit. Using nanosecond pulse-trains at pigment-friendly wavelengths (e.g., 694 nm Ruby, 755 nm Alexandrite), the system coagulates melanin-dense cells while sparing normally pigmented skin—a strategy designed for efficacy on epidermal and dermal pigment with minimal risk of scarring or PIH.

Why Pinpoint Coagulation™ is different

• Targets melanin-dense cells only. Short (ns) pulses raise melanin’s absorption non-linearly, converting laser energy into heat + acoustic waves right inside melanin granules. Surrounding, normally pigmented tissue stays below injury thresholds.
• Pulse-trains, not single shots. A sequence of nanosecond pulses is delivered with controlled timing. Between pulses, heat conducts away from pigment into adjacent tissue at different rates; where pigment is absent, temperature normalizes faster. The next pulse therefore re-heats only the melanin-dense points, producing “pinpoint” coagulation instead of broad heating.
• Designed for deep and stubborn lesions. Because energy localizes inside pigment granules, the method can address deeper or denser foci without removing healthy tissue, reducing the classic risks of thermal injury, scarring, and post-procedure hyperpigmentation. 

What it treats

• Acquired hypermelanoses: melasma/chloasma, solar lentigines, post-inflammatory and post-traumatic hyperpigmentation.
• Hereditary/constitutional pigmentations: ephelides (freckles), congenital hypermelanoses (e.g., café-au-lait).
• Depth spectrum: epidermal and dermal pigment (protocols and intervals differ by depth).

What a session is like

• Sensation: brief elastic “snaps.” Anaesthesia is usually unnecessary; optional cool air for comfort.
• Immediately after: treated spots darken; superficial bronzing/micro-crusts can appear and flake over days. 

Practitioner essentials

• Emitters & wavelengths (MULTILINE™): Ruby 694 nm and Alexandrite 755 nm Q-switched emitters for melanin; programs use ns pulse-trains with indication-oriented fluence/spot.
• Mechanism in practice: ns pulses increase melanin absorption; heat + acoustic effects remain below mechanical injury thresholds for surrounding skin when parameters are respected.
• Endpoints: progressive darkening then lightening over the course; avoid epidermal frosting/whitening (overtreatment).
• Protocol hygiene: clean, dry skin; eye protection (keratoprotectors for eyelids); no cosmetics in the field.

Results & course planning

• Sessions: course length depends on density/depth (typically 3-5 sessions).
  Intervals: epidermal pigment ~2 weeks; dermal pigment up to ~3 months when a darker hue persists between visits.
• Expected change: lesions fade over weeks; borders blend with adjacent skin tone; texture preserved (no ablative wounds).

How Pinpoint Coagulation™ compares

Benefits at a glance

For patients

• Selective fading of spots with natural-looking tone preservation.
• Minimal downtime and low scarring/PIH risk when protocols are followed.
• Comfortable sessions—typically no anaesthesia needed. 

For practitioners

• True selectivity for melanin-dense cells via ns pulse-trains and non-linear melanin absorption.
• Works across depths (epidermal → dermal) with programmed intervals and emitter presets.
• Platform simplicity: Ruby and Alexandrite plug into the MULTILINE™base unit; stable output and presets support reproducible outcomes.  

Key takeaway

Pinpoint Coagulation™ treats pigmented lesions by coagulating melanin-dense cells with nanosecond pulse-trains, leaving normally pigmented skin intact. That means effective fading of epidermal and dermal pigment with low risk of scarring/PIH, comfortable sessions, and a platform workflow clinics can standardize on MULTILINE™.