Why Is It Necessary To Equip Laser Treatment Rooms With A Smoke Evacuator? Ensuring Bio-Safety For Clinics

Learn why high-performance smoke evacuators are essential for laser safety, protecting staff from harmful plumes and ultra-fine particles.

What Is The Function Of Medical-Grade Fractional Co2 Lasers In Vaginal Tightening? Restoring Vaginal Health And Firmness

Learn how fractional CO2 lasers restore vaginal tightness and health through collagen regeneration, micro-ablation, and physiological restoration.

What Functions Do Laser Treatment Handpieces With Focusing Or Telescopic Capabilities Provide? Master Precision Aesthetics

Learn how adjustable laser handpieces control spot size, focal length, and energy density to target specific skin layers with clinical precision.

What Role Do Topical Depigmenting Agents Play For Pih After Co2 Laser? Clear Discoloration & Master Post-Laser Recovery

Learn how topical depigmenting agents suppress melanocytes and accelerate pigment metabolism to manage PIH after CO2 fractional laser treatments.

How Does The Pain From 808Nm Diode Laser Hair Removal Compare To Waxing? Experience Pain-Free Smoothness

Compare 808nm diode laser and waxing: discover why advanced cooling technology makes laser treatment significantly less painful and more effective.

What Are The Most Common Skin Lesions Associated With Photoaging And How Can They Be Treated? Expert Laser Solutions

Learn how to treat photoaging lesions like wrinkles and hyperpigmentation using advanced Q-switched laser technology for clear, youthful skin.

What Is The Patient Experience During A Q-Switched Nd: Yag Laser Treatment? Sensations, Recovery & Results

Learn what to expect during Nd:YAG laser treatment, from the 'rubber band' sensation to essential recovery tips for optimal skin healing.

What Are The Applications Of Low-Level Laser Therapy (Lllt)? Key Medical And Aesthetic Benefits

Explore the top applications of LLLT, from stimulating hair regrowth and pain management to wound healing through photobiomodulation.

What Are The Key Benefits Of The Multi-Step Facial Treatment? Unlock Immediate Radiance With Zero Downtime

Discover how multi-step facial treatments provide customized solutions for all skin types, targeting aging, texture, and congestion instantly.

What Have Studies Shown About The Effectiveness Of Lllt For Aga? Clinical Evidence For Hair Regrowth Success

Discover how LLLT effectively treats androgenetic alopecia by increasing hair density and count through clinical-grade light therapy solutions.

Why Is The Choice Of Provider Critical For Radiofrequency (Rf) Treatments? Ensure Safety And Maximize Aesthetic Results

Learn why choosing an expert provider for RF treatments is vital to prevent burns, ensure safety, and achieve optimal skin tightening results.

How Are Q-Switched Lasers Used For Tattoo Removal? Advanced Photoacoustic Technology For Clear Skin

Learn how Q-switched lasers shatter tattoo ink with nanosecond pulses and the photoacoustic effect for safe, effective pigment removal.

What Is The Difference Between Traditional Co2 Lasers And Fractional Lasers? Compare Efficacy, Safety, And Recovery

Learn the key differences between traditional and fractional CO2 lasers, including healing mechanisms, safety profiles, and treatment results.

What Is The Role Of Led Light Therapy When Used With A Hydrafacial? Enhance Your Treatment For Maximum Glow

Learn how LED light therapy elevates HydraFacial results by targeting acne with blue light and signs of aging with red light for a custom finish.

For Which Conditions Have Laser Hair Growth Treatment Devices Been Approved? Targeted Solutions For Androgenic Alopecia

Learn about the FDA-cleared use of laser hair growth devices for treating male and female pattern hair loss (androgenic alopecia) effectively.

What Are The Other Therapeutic Functions Of An Nd:yag Laser Besides Tattoo Removal? 7 Expert Skin Care Benefits

Beyond tattoo removal, discover how Nd:YAG lasers treat rosacea, sun damage, and boost collagen for skin tightening and wrinkle reduction.

What Are The Primary Biological Effects Of Medical-Grade Fractional Co2 Laser Systems For Gsm? Advanced Vaginal Renewal

Learn how fractional CO2 lasers treat GSM by stimulating collagen, restoring vaginal pH, and thickening epithelium for tissue regeneration.

What Is The Necessity Of Using Professional Skin Testers? Elevate Safety And Results In Laser Hair Removal

Discover why professional skin testers are essential for accurate melanin measurement and safer laser hair removal treatments.

Why Is The Use Of A High-Suction Smoke Evacuator Essential? Protect Your Clinic From Toxic Laser Plumes

Learn why smoke evacuators are vital for laser safety, capturing viral particles (HPV/SARS-CoV-2) and toxins to protect staff and patients.

How Does The Mechanism Of A Pbm System Differ From Thermal Laser? Heat Vs. Chemistry For Cellular Health

Discover the key differences between Photobiomodulation (PBM) and thermal lasers: non-thermal mitochondrial stimulation vs. heat-induced repair.

Why Does Fractional Co2 Laser Treatment Involve Three Sessions? Unlock The Secrets To Lasting Tissue Remodeling

Learn why the 3-session protocol and 1-2 month intervals are essential for collagen synthesis and optimal Fractional CO2 Laser results.

What Are The Advantages Of Using A Long-Pulse Alexandrite Laser Compared To A Ruby Laser For Hair Removal On Asian Skin?

Learn why the 755nm Alexandrite laser is safer and more effective than Ruby lasers for Asian skin tones, reducing burns and PIH risks.

What Is The Primary Mechanism Of Action For The Fractional Co2 Laser System In Vls? Revitalize Skin And Restore Health

Discover how the Fractional CO2 Laser System treats Vulvar Lichen Sclerosus through surface ablation and deep tissue remodeling for lasting relief.

What Is The Primary Function Of Fractional Co2 Laser In Burn Scar Treatment? Revolutionize Scar Remodeling And Healing

Learn how Fractional CO2 Lasers use micro-ablative zones and collagen remodeling to reduce hypertrophic burn scar thickness and improve elasticity.

What Are The Functional Differences Between Afl And Nafl In Scar Treatment? Choose The Right Technology For Results

Compare Ablative vs. Non-Ablative Fractional Lasers for scar treatment. Learn how vaporization and coagulation affect recovery and efficacy.

How Does Tissue Remodeling By Fractional Co2 Laser Alleviate Vulvar Lichen Sclerosus? Restore Dermal Health Today

Learn how Fractional CO2 Laser therapy reverses VLS symptoms by stimulating collagen synthesis, degrading fibrosis, and restoring skin elasticity.

What Is The Primary Function Of The 10,600Nm Fractional Co2 Laser In The Treatment Of Onychomycosis? Maximize Efficacy

Learn how the 10,600nm Fractional CO2 Laser treats Onychomycosis through thermal ablation, micro-channel creation, and enhanced drug penetration.

Why Is A High-Precision Imaging System Necessary For The Clinical Documentation Of Scar Treatment? Optimize Results.

Discover why high-precision imaging is vital for scar treatment documentation, ensuring accurate tracking of texture, color, and PRP efficacy.

What Are The Technical Advantages Of Picosecond Lasers? Achieve Faster Tattoo Clearance With Photoacoustic Precision

Discover how picosecond lasers use photomechanical shockwaves to shatter ink into dust, offering faster clearance and safer 'cold processing'.

What Is The Significance Of Precise Pulse Energy And Spot Density Control In Fractional Co2 Laser Treatment For Nails? Guide

Master Fractional CO2 Laser nail treatments. Learn how precise pulse energy and spot density prevent damage while ensuring effective drug delivery.

What Is The Core Mechanism Of Action For A Medical-Grade Fractional Co2 Laser In The Treatment Of Scars? Explained.

Learn how 10,600 nm wavelength lasers utilize selective photothermolysis and MTZs to ablate scar tissue and stimulate collagen remodeling.

How Is The Required Ablation Depth Determined In Erbium Yag For Actinic Cheilitis? Key Indicators For Clinical Success

Learn why pinpoint bleeding is the critical clinical marker for determining ablation depth during Erbium YAG laser treatment for actinic cheilitis.

Fractional Er:yag Vs Co2 Laser For Hypertrophic Scars: Comparing Tissue Interaction & Efficacy

Discover the key differences between Er:YAG and CO2 lasers in scar treatment: water absorption, thermal damage, and clinical outcomes for clinics.

Why Is Fractional Co2 Laser Better For Rolling Scars Than Ice Pick Scars? Optimize Your Scar Treatment Results

Learn why fractional CO2 laser monotherapy excels at treating rolling scars through thermal remodeling while facing limits with deep ice pick scars.

How Does A High-Precision 3D Skin Imaging System Improve Wrinkle Analysis? Science-Driven Data For Precision Aesthetics

Learn how 3D skin imaging uses shape-from-shading technology to provide objective, quantitative metrics for wrinkle depth, width, and volume.

What Are The Core Functions Of Cooling Systems In Laser Hair Removal? Ensure Safety And Maximize Treatment Results

Learn how integrated cooling systems protect the skin, reduce pain, and enable higher energy levels for superior laser hair removal outcomes.

What Is The Specific Function Of A Scanning Stamp Handpiece? Master Deep Dermal Repair And Collagen Remodeling

Learn how scanning stamp handpieces deliver high-intensity CO2 laser pulses to treat deep wrinkles and severe photoaging through dermal remodeling.

Why Are Professional Skin Testers Necessary For Acne Management? Transform Diagnosis With Data-Driven Science

Discover how professional Skin Testers use multispectral imaging to quantify porphyrins and sebum for precise, evidence-based acne treatment.

What Is The Technical Purpose Of Dermal Compression In Laser Hair Removal? Enhance Laser Depth & Energy Delivery

Learn how dermal compression optimizes laser hair removal by reducing scattering, displacing hemoglobin, and maximizing energy delivery.

What Are The Negative Effects Of Integrated Cryogen-Spray Cooling Systems On Particle Dispersion? Stay Safe In Clinics

Learn how cryogen-spray cooling impacts smoke evacuation and discover the equipment upgrades needed to maintain respiratory safety during lasers.

What Technical Advantages Does Contact Cooling Offer For Particle Control? Optimize Your Clinic's Air Quality Today

Discover how contact cooling in diode lasers minimizes ultra-fine particle dispersion by eliminating air turbulence for a safer clinical environment.

Why Is A High-Precision Skin Detection System Necessary For Gluconolactone? Prove Anti-Aging Efficacy With Data

Learn how high-precision skin detection systems use 3D analysis and multi-spectral imaging to quantify the anti-aging effects of Gluconolactone.

Why Are Professional Dermoscopy And Skin Diagnostic Devices Critical For Cancer Screening? Save Lives With Early Detection

Learn how dermoscopy and skin diagnostic devices reveal hidden indicators of malignancy to accelerate skin cancer screening and improve survival.

How Does The Intelligent Temperature Locking Mechanism In Bipolar Rf Devices Work? Ensure Maximum Collagen Stimulation

Learn how intelligent temperature locking in bipolar RF devices ensures effective treatment duration by gating time based on real-time heat data.

How Do Ablative Fractional Laser (Lfa) Systems Compare To Non-Ablative? Achieve Superior Wrinkle Reduction & Tightening

Discover why CO2 fractional lasers outperform non-ablative methods for severe wrinkles through deep tissue remodeling and physical vaporization.

Why Are Specific Energy Settings And Specialized Pulse Modes Required For Vitiligo? Master Precision In Repigmentation

Learn how precise CO2 laser settings and Smart Pulse technology trigger melanocyte regeneration while ensuring safety in vitiligo treatments.

Why Is 10600Nm Wavelength Used For Fractional Co2 Lasers? The Science Of Effective Scar Treatment

Learn why the 10600nm wavelength is the gold standard for scar removal, balancing water absorption, deep tissue ablation, and collagen remodeling.

How Does A Fractional Co2 Laser System Facilitate Enhanced Transdermal Drug Delivery? Boost Absorption Efficiency

Learn how Fractional CO2 Lasers create Micro-Treatment Zones to bypass the skin barrier and enhance the delivery of therapeutic molecules.

What Are The Microscopic Mechanisms Of Transvaginal Radio Frequency Technology In Urinary Incontinence? Explained

Explore how transvaginal RF technology uses thermal energy to trigger neocollagenesis and angiogenesis to treat urinary incontinence.

How Is The Safety And Patient Tolerance Of Fractional Co2 Laser (Fcl) Evaluated? High Biosafety Standards For Gsm

Learn how Fractional CO2 Laser safety and patient tolerance are evaluated through clinical monitoring, protocol standardization, and recovery.

How Do Red Light And Amber Light Led Devices Function In Facial Rejuvenation Phototherapy? Boost Skin Repair & Hydration

Learn how Red and Amber Light LED therapy use photobiomodulation to stimulate collagen, accelerate cell turnover, and rejuvenate skin from within.

Why Is A High-Precision Skin Analyzer Considered Essential? Transform Your Clinic With Data-Driven Results

Discover how high-precision skin analyzers use multispectral imaging to quantify skin health, optimize treatments, and build patient trust.

What Is The Primary Function Of A High-Magnification Scalp Hair Follicle Detector? Precise Fphl Diagnostics

Learn how high-magnification scalp detectors identify FPHL biomarkers like hair diameter diversity and peripilar signs for objective diagnosis.

What Is The Clinical Benefit Of Applying Ice Packs Immediately Following Laser Treatment For Akn? Essential Care Guide

Learn why post-laser cooling is vital for Acne Keloidalis Nuchae treatments to reduce edema, erythema, and the risk of hyperpigmentation.

How Does Fractional Co2 Laser Technology Enhance The Efficacy Of Topical Antifungal Treatments For Onychomycosis?

Learn how fractional CO2 lasers use Laser-Assisted Drug Delivery (LADD) to penetrate the nail plate and cure refractory onychomycosis effectively.

How Does The Fractional Co2 Laser System Promote Vaginal Tissue Regeneration? Advanced Gsm Treatment Explained

Understand how Fractional CO2 Laser technology uses controlled thermal injury to trigger collagen synthesis and restore vaginal health in GSM patients.

How Does Fractional Co2 Laser Technology Facilitate Assisted Drug Delivery For Scalp Treatments? Boost Follicle Absorption

Learn how Fractional CO2 Laser technology creates micro-channels to bypass the skin barrier and enhance drug delivery for scalp and hair treatments.

How Do Copper Peptides Facilitate Skin Recovery After Laser Treatments? Accelerate Healing And Enhance Results

Discover how Copper Peptides speed up recovery after laser or chemical peels by boosting angiogenesis, reducing inflammation, and building collagen.

Why Is Fractional Ablative Laser Technology Better For Scars? Discover The Power Of Microscopic Thermal Zones

Learn why fractional ablative lasers outperform traditional methods for scar revision through rapid healing and reduced pigmentation risks.

What Role Does A Non-Contact Infrared Laser Thermometer Play? Boost Safety & Precision In Aesthetic Laser Monitoring

Discover how non-contact infrared thermometers provide real-time thermal data to prevent injury and optimize laser treatment protocols.

Why Are Specific Pulse Delay Times And Spot Spacing Parameters Set For Vaginal Fractional Co2 Laser? Precision Guide

Learn how precise pulse delay and spot spacing in Fractional CO2 laser treatments ensure safe tissue regeneration and faster recovery for patients.

What Is The Core Function Of A Gold-Plated Microneedle Array? Unlock Precision Energy Delivery For Superior Skin Results

Discover how gold-plated microneedles act as precision energy conductors to maximize collagen remodeling while protecting the skin's surface.

How Does The Co2 Laser-Assisted Hair Transplant Compare To Cold Scalpel Methods? Achieve Superior Implantation Density

Learn how CO2 laser vaporization eliminates the 'wedge effect' and tissue compression to allow for higher hair transplant density vs scalpels.

What Is The Mechanism By Which Ablative Fractional Co2 Laser Improves The Flexibility Of Burn Scars? Unlock Skin Mobility

Learn how Ablative Fractional CO2 Lasers use fractional photothermolysis to break down rigid scar tissue and restore skin flexibility and movement.

What Is The Functional Role Of A Professional-Grade Co2 Fractional Laser In Treating Bcc? Unlock Advanced Therapy

Learn how CO2 fractional lasers act as biological catalysts in BCC treatment through immune activation and laser-assisted drug delivery.

How Does The High-Energy Fractional Co2 Laser System Function In Treating Burn Scars? Advanced Collagen Remodeling

Learn how fractional CO2 lasers treat hypertrophic and atrophic scars through MTZs and collagen remodeling for superior clinical results.

How Do The Thermal Effects Produced By A Fractional Co2 Laser Alleviate Chronic Postpartum Vaginal Pain? Expert Insights

Discover how fractional CO2 laser thermal energy rebuilds vaginal tissue and shields nerve endings to eliminate chronic postpartum pain.

Why Can A 0.65Ms Short Pulse Nd:yag Laser Be Used Without Cooling Gels? Discover The Science Of Efficient Treatments.

Learn how 0.65ms pulse duration prevents thermal buildup, eliminating the need for cooling gels while maintaining safety and patient comfort.

What Is The Role Of The Super-Long Pulse 810 Nm Diode Laser? Master Thermal Damage Time For Safe Hair Removal

Learn how super-long pulse 810 nm diode lasers utilize Thermal Damage Time (TDT) to safely destroy hair follicles on all skin types.

What Is The Primary Mechanism Of Action For Medical-Grade Fractional Co2 Laser? Advanced Atrophic Scar Repair Explained

Learn how Fractional CO2 lasers use fractional photothermolysis and MTZs to repair atrophic scars through collagen remodeling and dermal volume.

What Is The Mechanism Of Action Of Co2 Fractional Laser For Vaginal Atrophy? Restore Tissue Health With Precision

Learn how CO2 fractional lasers use thermal energy to stimulate collagen, restore vaginal mucosa, and treat genitourinary syndrome of menopause.

Why Do Picosecond Lasers Offer Advantages Over Traditional Nanosecond Q-Switched Lasers? Precision Redefined

Discover why Picosecond lasers provide faster pigment clearance and safer results through photomechanical effects compared to nanosecond systems.

How Does A Dynamic Cooling Spray System Achieve Epidermal Protection? Superior Safety In Rapid-Pulse Laser Operations

Learn how dynamic cooling spray uses evaporative heat absorption to protect skin and enable higher energy laser treatments.

What Are The Core Technical Advantages Of A High-Performance Picosecond 1,064-Nm Nd:yag Laser In Treating Pih?

Learn how picosecond Nd:YAG lasers use photoacoustic effects to treat PIH safely, reducing heat damage compared to traditional nanosecond lasers.

What Role Does Professional-Grade Fractional Laser Therapy Play In Burn Scar Rehab? Accelerate Healing And Mobility

Discover how professional fractional laser therapy accelerates burn scar recovery by breaking down collagen and triggering deep tissue remodeling.

What Role Do Integrated Skin Cooling Devices Play In Laser Treatments? Enhancing Safety And Clinical Efficacy

Discover how integrated skin cooling protects the epidermis, enables higher energy delivery, and improves patient comfort during laser therapy.

What Is The Mechanism Of Action For Collagen Induction Devices? Master The Science Of Natural Skin Rejuvenation

Understand how microneedling triggers neocollagenesis and enhances transdermal absorption for superior skin repair and anti-aging results.

Why Is The Combination Of Fractional Co2 Laser And 1540 Nm Laser Recommended For Sui? Discover The Dual-Wavelength Power

Learn how combining CO2 and 1540nm lasers creates a synergistic effect for SUI treatment, enhancing collagen and urethral support.

How Does The Use Of A High-Specification Rf-Excited Laser Emitter Contribute To Treatment Consistency? (Expert Guide)

Learn how RF-excited laser emitters ensure stable energy and precise pulse widths for safer, more consistent clinical results compared to standard sources.

Why Is Fractional Mode Co2 Laser Preferred For Rosacea? Balancing Safety & Superior Tissue Remodeling

Learn why fractional CO2 lasers outshine traditional ablative methods for Rosacea by reducing recovery time and inhibiting fibrous overgrowth.

Why Is It Necessary To Adjust Laser Parameters Based On Fitzpatrick Skin Types? Ensuring Safety In Acne Scar Removal

Learn why customizing laser parameters for Fitzpatrick skin types is vital to prevent burns and PIH during fractional laser acne scar treatments.

Why Is A Protocol Of Three Fractional Co2 Laser Sessions Recommended? Maximize Collagen Synthesis And Incontinence Results

Learn why the 4-6 week interval for 3 fractional CO2 laser sessions is crucial for collagen remodeling and effective urinary incontinence treatment.

Why Is The Fitzpatrick Skin Typing System A Core Criterion For Laser Hair Removal? Master Safety And Efficacy

Learn how the Fitzpatrick scale guides laser wavelength and energy settings to ensure safe hair removal and reduce side effects by over 20%.

What Is The Safety Significance Of Non-Overlapping Single-Pass Scanning In Co2 Fractional Laser? Prevent Thermal Risks

Learn how non-overlapping scanning in CO2 fractional laser procedures prevents heat stacking, protects skin bridges, and ensures faster recovery.

By What Physical Mechanism Does A Fractional Co2 Laser System Improve The Vaginal Health Index (Vhis)? Laser Science

Learn how fractional CO2 lasers use thermal injury and HSP70 activation to reorganize collagen and restore the Vaginal Health Index (VHIS).

What Is The Function Of High-Performance Cooling Systems? Ensure Safety & Efficacy In Laser Treatments

Learn how air and contact cooling systems protect the skin, enable higher energy levels, and improve patient comfort during laser treatments.

What Is The Primary Function Of Fractional Co2 Laser For Keloids? Transform Scars With Advanced Co2 Laser Technology

Learn how Fractional CO2 Lasers treat keloids by inducing collagen remodeling and creating micro-channels for deeper medication penetration.

How Do Professional-Grade Growth Factor Solutions Synergize With Fractional Co2 Laser? Enhance Scar Repair Efficiency

Learn how Fractional CO2 Lasers create micro-channels for growth factors to penetrate deep dermis, accelerating collagen repair and scar healing.

What Are The Functions Of A Skin Colorimeter In The Safety Assessment Of Aesthetic Products? Enhance Clinical Precision.

Discover how skin colorimeters use erythema and melanin analysis to detect irritation and guide safe energy settings for laser and RF treatments.

How Is The 10 Cm Visual Analog Scale (Vas) Used For Vaginal Co2 Laser? Quantify Clinical Efficacy And Patient Comfort

Learn how the 10 cm VAS measures symptom relief and procedural pain in Fractional CO2 Laser treatments to ensure optimal vaginal health outcomes.

Why Is It Necessary For A Laser Hair Removal Cooling System To Maintain The Sapphire Tip At 5°C? Safety & Efficacy

Learn how a 5°C sapphire cooling tip creates a thermal safety margin, protecting skin while enabling higher energy for effective hair removal.

What Are The Primary Technical Advantages Of Carbon Dioxide (Co2) Laser Ablation In The Non-Surgical Management Of Cmn?

Explore the benefits of CO2 laser ablation for Congenital Melanocytic Nevi, including fractional technology, rapid healing, and aesthetic outcomes.

What Are The Technical Advantages Of Co2 Laser Deroofing? Precision Vs. Traditional Wide Surgical Excision For Hs

Compare CO2 laser deroofing with traditional excision for Hidradenitis Suppurativa. Learn about precision, hemostasis, and tissue-sparing benefits.

How Does Q-Switching Technology Function? Master Pigment Removal With Nanosecond Precision

Learn how Q-switching technology uses nanosecond pulses and photomechanical effects to shatter pigments safely and effectively.

Why Is The Application Of Medical Cold Packs Necessary After Fractional Laser? Essential Safety & Recovery Guide

Learn why immediate cooling is vital post-fractional laser to prevent thermal damage, reduce PIH, and accelerate skin healing.

Which Technical Parameters Are Monitored By High-Precision Skin Colorimeters? Quantify Laser Repair Success

Discover how skin colorimeters use Erythema Index, Melanin values, and L* brightness to objectively measure laser treatment repair effectiveness.

What Is The Mechanism Of Fractional Co2 Laser For Stable Vitiligo? Master Advanced Repigmentation Technology

Learn how fractional CO2 lasers treat vitiligo by creating micro-channels that boost drug absorption and stimulate dormant melanocyte migration.

Why Is High-Spf Sunscreen Mandatory After Microneedling Depigmentation? Protect Your Skin And Prevent Pigment Rebound

Learn why SPF 50+ is essential post-microneedling to protect your skin's compromised barrier and prevent secondary melanin synthesis.

How Do Multifunctional Skin Testers Support Pcos Clinical Diagnosis? Enhance Pcos Skin Care With Precise Diagnostics

Learn how multifunctional skin testers quantify PCOS symptoms like sebum, inflammation, and hair density to optimize laser and medical treatments.

What Is The Primary Role Of A Long-Pulse Alexandrite Laser Device In Facial Hair Removal? Professional Efficiency Explained

Learn how long-pulse Alexandrite lasers use selective photothermolysis to destroy facial hair follicles while protecting the surrounding skin.