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.

What Are The Recommended Aftercare Steps For Cryolipolysis? Boost Your Fat-Freezing Results Successfully

Optimize your Cryolipolysis recovery with our expert guide on hydration, massage, and the crucial reasons to avoid anti-inflammatory medications.

When Was Low-Intensity Laser Therapy (Lilt) Approved As A Safe Treatment For Hair Loss? Fda Milestones & Safety Guide

Discover the FDA regulatory timeline for LILT hair loss treatment, including the 2007 and 2011 approvals for men and women.

In What Forms Is Nd:yag Used And What Are Their Characteristics? Compare Single Crystal Vs. Ceramic Options

Learn about monocrystalline and ceramic Nd:YAG forms, their 1064nm wavelength advantages, and key efficiency characteristics for medical lasers.

For What Range Of Skin Types Are Nd: Yag Lasers Effective? The Gold Standard For Dark Skin Safety And Results

Discover why Nd:YAG lasers are the safest choice for Fitzpatrick skin types IV-VI, offering effective hair removal and deep dermal treatments.

In What Part Of The Electromagnetic Spectrum Do Nd: Yag Lasers Operate? Understanding Infrared Precision And Safety

Learn why ND: YAG lasers operate in the infrared spectrum, the importance of their invisible beam, and critical safety protocols for clinics.

Why Is The Q-Switched Laser Considered Safe For Use On Delicate Areas Of The Body? Gentle Precision For Sensitive Skin

Learn why Q-Switched lasers are the safety standard for delicate areas, featuring non-ablative technology that preserves the top skin layer.

How Do The Treatment Time And Downtime Associated With The Q-Switched Laser Compare? Efficiency Vs. Traditional Methods

Compare Q-Switched laser treatment efficiency and downtime to traditional methods. Learn why a 20-minute session offers zero recovery time.

What Are The Applications Of A 532Nm Yag Laser Head? Targeted Solutions For Red And Tan Pigment Removal

Learn how the 532nm YAG laser head effectively targets red tattoos, permanent makeup, and superficial spots for precise pigment correction.

What Are The Advantages Of A Yag Laser Handle With A High Homogeneous Light Spot? Ensure Precision And Patient Safety

Explore how homogeneous light spots in YAG lasers ensure uniform energy, prevent clinical hot spots, and deliver consistent, safe aesthetic results.

What Type Of Cooling System Is Utilized For Continuous Laser Operation? Maximize Your Clinic’s 24/7 Productivity

Learn how constant temperature cooling systems enable 7x24h non-stop laser operation and how sapphire cooling ensures patient safety and comfort.

What Are The Technical Specifications Of The Nd Yag Laser System? Explore Precision, Power, And Wavelength Versatility

Discover the technical specs of the Nd:YAG laser system, featuring 1600mj energy output, 1-10Hz frequency, and specialized wavelength tips.

What Are The Two Main Systems Of The 2-In-1 Multifunctional Beauty Device? Optimize Your Clinic's Treatment Versatility

Learn about the Diode Laser and ND Yag Laser systems in 2-in-1 beauty devices, covering hair removal, tattoo removal, and skin rejuvenation.

What Is The Operating Principle Of An 808Nm Diode Laser? Unlocking Selective Photothermolysis For Permanent Hair Removal

Learn how 808nm diode lasers use selective photothermolysis and sapphire cooling to destroy hair follicles safely and effectively.

What Are Some Available Spot Sizes For Diode Laser Applicators? Optimize Efficacy With 12X24Mm & 12X36Mm Technology

Learn how spot sizes like 12x24mm and 12x36mm enhance diode laser hair removal by improving energy absorption and targeting hair follicles.

What Types Of Pigmented Lesions Can Be Treated With An Nd Yag Laser? Comprehensive Guide To Clear Skin

Learn how ND YAG lasers effectively treat Nevus of Ota, sun spots, freckles, and tattoos by targeting deep dermal and superficial epidermal pigment.

What Are The Technical Advantages Of Laser Hair Removal Systems Compared To Traditional Needle Electrolysis?

Discover why laser systems outperform electrolysis through selective photothermolysis, faster treatments, and non-invasive follicle deactivation.

What Is The Mechanism Of Action For The Long-Pulse 1064 Nm Nd:yag Laser System? Expert Insights On Scar Treatment

Learn how the 1064 nm Nd:YAG laser uses deep thermal regulation, vascular coagulation, and MMP activation to flatten and soften hypertrophic scars.

What Are The Technical Advantages Of Using Titanium For Microneedles? Superior Rigidity For Precise Skin Penetration

Discover why titanium is the premier choice for microneedles in skin studies, offering mechanical strength, inertness, and precise penetration.

What Is The Primary Function Of The Scanner In A Fractional Co2 Laser? Master Precision In Skin Resurfacing

Learn how the scanner in a Fractional CO2 laser system controls beam density and patterns to ensure safe, rapid skin healing and collagen growth.

How Does Professional Ipl Handpiece Design Improve Leg Treatment Efficiency? Maximize Speed With Large Spot Sizes

Discover how large spot size handpieces and sapphire glass in professional IPL devices accelerate treatments for large areas like the legs.

Why Control Pulse Duration In Fractional Co2 Laser Neck Treatment? Essential Tips To Prevent Scarring And Ensure Safety

Learn why short pulse duration is vital in neck CO2 laser treatments to prevent thermal damage overlap and high risks of hypertrophic scarring.

What Is The Mechanism Of Action For Medical-Grade Electroporation? Boost Skin Permeation With Precision

Learn how medical-grade electroporation uses alternating current to create transient channels for deep active ingredient penetration.

Why Is The Bipolar Radiofrequency Output Mode Utilized In Microneedle Fractional Rf? Precision & Safety Explained

Learn why Bipolar mode in MFR systems ensures precise dermal heating, enhanced safety, and superior results for skin tightening and wrinkles.

What Is The Role Of Carbon-Based Materials With Mineral Oil In Nd:yag Laser Hair Removal? Enhance Your Clinical Results

Learn how carbon and mineral oil act as an exogenous chromophore to optimize energy absorption in Nd:YAG laser hair removal treatments.

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.

What Is The Primary Auxiliary Role Of The 10,600 Nm Co2 Fractional Laser In Alopecia Areata Treatment?

Learn how the 10,600 nm CO2 Fractional Laser acts as a transdermal delivery system to boost stem cell absorption for severe Alopecia Areata.

Why Is The Nd:yag Laser Medium Widely Utilized For Tattoo Removal And Vascular Lesions? Unlock Deep-Tissue Precision

Learn how the Nd:YAG laser's 1064nm wavelength and selective photothermolysis provide safe, effective tattoo removal and vascular lesion treatment.

Why Is Medical-Grade Hair Removal Laser Technology Necessary For Hs? Advanced Follicular Solutions For Clinics

Discover why medical-grade lasers, specifically Nd:YAG 1064nm, are essential for preventing and managing Hidradenitis Suppurativa (HS) effectively.

What Is The Function Of Q-Switching Components? Harness High Peak Power For Superior Pigment & Tattoo Removal

Learn how Q-switching components create nanosecond pulses and photoacoustic effects to shatter melanin without damaging healthy skin tissue.

What Are The Primary Mechanisms Of Pdl And Nd:yag Lasers For Rosacea? Expert Insights Into Vascular Laser Science

Learn how PDL and Nd:YAG lasers use selective photothermolysis and hemoglobin absorption to treat rosacea redness and deep vascular lesions.

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 Does The Ablative Fractional Co2 Laser (Afl) Function In Scar Remodeling? Achieve Precise Surgical Scar Revision

Learn how AFL uses fractional photothermolysis to disrupt disordered collagen, stimulate regeneration, and improve surgical scar texture and depth.

Why Is A One-Month Interval Required Between Q-Switched Laser Treatment Sessions? Optimize Healing & Pigment Clearance

Understand the biological necessity of a 4-week gap in laser treatments for safe pigment removal, lymphatic drainage, and skin tissue recovery.

What Is The Primary Mechanism Of Fractional Co2 Laser In The Treatment Of Pathological Scars? Understanding Skin Remodeling

Learn how Fractional CO2 lasers treat pathological scars through microscopic thermal ablation zones and collagen structural reorganization.

What Is The Primary Function Of Fractional Co2 Laser For Alopecia Areata? Effective Scalp Regeneration Explained

Learn how Fractional CO2 Laser treats Alopecia Areata by creating micro-thermal zones to reactivate hair follicles and improve topical absorption.

How Does The Picosecond Nd:yag Laser Compare To Traditional Nanosecond Lasers In Pih Treatment? Discover The Difference

Compare Picosecond vs. Nanosecond Nd:YAG lasers for PIH. Learn why photoacoustic technology offers safer, faster pigment clearance with less heat.

Why Is The Application Of Topical Anesthetic Cream Necessary Prior To Fractional Co2 Laser? Ensure Pain-Free Precision

Learn why anesthetic cream is vital for Fractional CO2 Laser treatments to manage pain, ensure safety, and achieve optimal clinical results.

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.

How Does A Sequential Combination Protocol Involving Ipl, Q-Switched, And Fractional Lasers Assist In Tattoo Removal?

Learn how the synergy of IPL, Q-switched, and fractional lasers accelerates tattoo removal through mechanical shattering and physical extraction.

What Is The Significance Of Fixed Power Output In Super-Long Pulse Diode Laser Systems For Clinical Process Control?

Discover how fixed power output ensures precision, stability, and repeatable results in super-long pulse diode laser treatments.

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 Diluted Acetic Acid Play In The Post-Operative Care? Boost Laser Healing And Prevent Infection

Learn how diluted acetic acid soaks protect skin after fractional laser treatment by preventing infection and accelerating tissue regeneration.

Why Is An Integrated Peltier Technology Metal Cooling Rod Used For Active Skin Cooling? Ensure Safe Laser Treatments

Learn how Peltier cooling rods protect the epidermis and enable high-energy laser efficacy through active contact cooling technology.

How Does The Immediate Application Of Medical Ice Packs After Laser Treatment Prevent Pih And Improve Skin Prognosis?

Learn how immediate cooling after laser therapy inhibits melanocyte activation, reduces inflammation, and blocks PIH development.

Why Is The 1064 Nm Nd:yag Laser System Safer For Darker Skin? Discover The Gold Standard For Skin Types Iv-Vi

Learn how the 1064 nm Nd:YAG laser bypasses surface melanin to provide safe, effective hair removal for darker skin tones without risking burns.

What Is The Primary Mechanism Of 1064Nm Nd:yag Laser For Striae Distensae? Discover Advanced Dermal Remodeling

Learn how long-pulse 1064nm Nd:YAG lasers treat stretch marks through deep dermal heating, vascular targeting, and collagen regeneration.

What Are The Technical Considerations For Selecting A 530Nm Wavelength Filter? Optimize Your Skin Rejuvenation Results

Master 530nm filter selection for skin rejuvenation. Learn how to target melanin and hemoglobin effectively using selective photothermal action.

Why Is It Necessary To Apply The Carbon Solution 30 Minutes Before Nd:yag Laser? Master Safety And Efficacy

Learn why the 30-minute carbon incubation is vital for Nd:YAG laser safety, ensuring deep pore penetration and preventing epidermal burns.

What Is The Mechanism Of Fractional Photothermolysis? How Co2 Fractional Lasers Heal Acne Scars

Learn how fractional photothermolysis uses Micro-Thermal Zones and 10,600nm wavelengths to remodel collagen and effectively treat acne scars.

What Is The Primary Mechanism Of The 755Nm Alexandrite Laser In Hair Removal? The Science Of Permanent Smoothness

Learn how the 755nm Alexandrite laser uses selective photothermolysis and melanin absorption to destroy hair follicles permanently.

What Diagnostic Role Does A Wood's Lamp Play In Evaluating Laser-Induced Skin Depigmentation? Insights For Safe Care

Learn how the Wood's lamp distinguishes between permanent melanocyte loss and temporary hypopigmentation to ensure safe laser treatment recovery.

How Do 810 Nm Diode Lasers Utilize Scattering Models? Optimize Hair Removal Safety And Depth Efficiency

Learn how 810 nm diode lasers use scattering models to calculate safe energy limits and protect the epidermis while ensuring deep follicle damage.

Why Is A 5% To 10% Spot Overlap Necessary During Laser Hair Removal? Ensure Uniform Results And Eliminate Blind Spots

Learn why a 5% to 10% laser spot overlap is critical to preventing 'zebra stripes' and ensuring complete hair follicle destruction in treatments.

What Is The Function Of The Long-Pulse Nd:yag Laser In Pfb Treatment? The Safe Solution For Ingrown Hair & Darker Skin

Learn how the 1064nm Long-pulse Nd:YAG laser treats Pseudofolliculitis Barbae by targeting follicles while protecting dark skin tones effectively.

What Is The Clinical Significance Of Fractional Co2 + 595Nm Pdl For Scars? Master Advanced Multi-Modal Resurfacing

Learn how combining CO2 laser and PDL targets both vascular supply and collagen remodeling for superior, faster scar management and healing.

What Is The Primary Function Of A Sapphire Contact Cooling System? Maximize Safety And Laser Efficacy

Learn how sapphire contact cooling and hydrogel protect the skin from thermal damage and suppress harmful laser plumes during hair removal.

How Does A 10,600 Nm Co2 Fractional Laser Contribute To The Remodeling Of Scar Tissue? Expert Guide To Scar Revision

Learn how the 10,600 nm CO2 fractional laser remodels scar tissue by vaporizing rigid fibers and stimulating Type I collagen for smoother skin.

What Is The Significance Of The Mend Mechanism In Laser Treatment? Accelerate Pigment Purging For Clearer Skin

Learn how the MEND mechanism physically expels melanin after fractional laser treatment to achieve rapid skin tone improvement and pigment removal.

What Is The Clinical Significance Of Frequent Moisturizer Application During A Laser Treatment Cycle? | Boost Healing

Discover why moisturizing is critical for laser recovery: it prevents water loss, accelerates cell migration, and ensures smooth, scar-free healing.

Why Does The Q-Switched 1064Nm Nd:yag Laser Offer Advantages For Tattoo Removal In Patients With Darker Skin Tones?

Discover why the 1064nm Nd:YAG laser is the safest choice for removing tattoos on dark skin while preventing pigment damage and scarring.

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 Are The Primary Advantages Of Q-Switched Technology? High-Power Precision For Tattoos And Vascular Lesions

Learn how Q-switched technology uses nanosecond pulses and photoacoustic effects to safely remove tattoos and treat vascular lesions with precision.

How Does An Integrated Contact Cooling System Protect Skin Tissue? Advanced Safety For Medical Hair Removal

Learn how integrated contact cooling uses sapphire tips to protect the epidermis and enable high-fluence laser hair removal treatments.

What Is The Primary Function Of High-Power Blue Light Led Devices In Photobiomodulation? Boost Growth With Cold Light

Discover how 410-430nm blue light LEDs stimulate fibroblasts and keratinocytes through non-thermal photobiomodulation for enhanced cell repair.

Why Is A High Absorption Coefficient Critical For The Performance Of Co2 Lasers In Ablative Medical Procedures? Precision Explained

Discover why high absorption in water makes CO2 lasers the gold standard for precise tissue ablation and skin resurfacing with minimal damage.

What Is The Primary Purpose Of Applying A Local Carbon Solution? Enhance Laser Absorption For Targeted Results

Learn how local carbon solutions act as exogenous chromophores in Q-switched laser treatments to enhance energy absorption and follicle targeting.

What Is The Therapeutic Mechanism Of The 1550 Nm Non-Ablative Fractional Laser In The Treatment Of Melasma? Key Insights

Learn how the 1550nm non-ablative fractional laser treats melasma using MTZs to expel pigment safely without damaging the skin's surface barrier.

What Is The Mechanism Of Fractional Microneedle Radiofrequency (Fmrf) In The Treatment Of Photoaged Skin? Revitalize Now

Learn how Fractional Microneedle RF (FMRF) uses volumetric heating and dermal remodeling to reverse photoaging, wrinkles, and skin laxity.

What Function Do Cooling Gels Or Ice Packs Serve In The Fractional Co2 Laser Treatment Protocol? Enhance Recovery Speed

Learn how cooling gels and ice packs dissipate residual heat and prevent PIH in Fractional CO2 laser protocols to ensure patient safety.

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.

What Are The Advantages Of Using A Co2 Laser Over A Q-Switched Laser For Seborrheic Keratosis? Vaporize Lesions Fast

Learn why CO2 lasers outperform Q-switched lasers for raised seborrheic keratosis by utilizing water absorption for precise tissue vaporization.

What Are The Biological Benefits Of Combining Microneedling With Drug Delivery Systems? Boost Collagen Synergistically

Learn how microneedling with drug delivery overcomes the skin barrier to maximize collagen regeneration and tissue repair without thermal damage.

What Role Do Medical-Grade Long-Pulse Laser Devices Play In Permanent Hair Removal? Enhance Your Clinic's Results

Learn how Diode, Alexandrite, and Nd:YAG lasers use selective photothermolysis to destroy hair follicles safely for long-term hair reduction.

Why Is The Long-Pulse Nd:yag Laser Safer For Darker Skin? Protect Patients With 1064Nm Precision

Learn how 1064nm long-pulse Nd:YAG lasers ensure safety for dark skin by bypassing surface melanin to target the deep dermis.

How Does The Application Of Cooling Gel Affect Laser And Ipl Treatments? Maximize Safety & Efficacy In Your Clinic

Learn how cooling gel protects the epidermis and optimizes light energy transmission for professional-grade laser and IPL treatments.

Why Does A 1064 Nm Long-Pulse Nd:yag Laser Offer A Unique Advantage For Patients With Higher Melanin Levels?

Learn why 1064 nm Nd:YAG lasers are the gold standard for dark skin (Fitzpatrick IV-VI), offering deep penetration and superior epidermal safety.

Why Use High-Precision Hair Density Measurement For Fphl? Data-Driven Science For Clinical Hair Loss Evaluation

Discover why high-precision measurement equipment is essential for diagnosing FPHL, tracking treatment efficacy, and monitoring hair miniaturization.

What Is The Role Of Topical Anesthetic Cream In Fractional Co2 Laser? Enhancing Comfort And Clinical Efficacy

Learn how topical anesthetic cream blocks nerve signals and enables higher energy settings for successful Fractional CO2 laser procedures.

What Are The Recommended Recovery Steps After An Nd:yag Laser Treatment? Expert Post-Care Guide For Flawless Results

Learn the essential recovery steps for Nd:YAG laser treatment, from immediate cooling to long-term sun protection and skin repair tips.

Is Shaving Required For Shr Laser Hair Removal Treatments? Essential Prep For Maximum Results

Learn why shaving is mandatory for SHR laser hair removal and discover the best pre- and post-treatment practices for permanent results.

How Does The Q-Switched Nd Yag Laser Facilitate Skin Resurfacing And Spot Treatment? Advanced Pigment & Collagen Science

Learn how Q-switched ND YAG lasers stimulate collagen and shatter melanin for effective skin resurfacing and spot removal with minimal downtime.

How Does A Q-Switched Nd Yag Laser Perform Tattoo Removal? The Science Of Photomechanical Ink Shattering

Learn how Q-switched Nd:YAG lasers use nanosecond pulses and photomechanical shockwaves to safely shatter tattoo ink for effective removal.

What Are The General Applications Of An Nd:yag Laser? Master Deep Tissue Treatments With Precision

Explore the versatile applications of Nd:YAG lasers, from tattoo removal and skin rejuvenation to precision ophthalmology and advanced dentistry.

What Is The Function Of Collagen And Elastin In The Skin? Unlocking The Secret To Youthful Firmness And Elasticity

Discover how collagen and elastin work together to provide structural support, prevent sagging, and maintain resilient, youthful-looking skin.

What Are The Available Treatment Options For Paradoxical Hypertrichosis? Expert Solutions For Induced Hair Regrowth

Learn how to treat paradoxical hypertrichosis effectively using optimized laser parameters, wavelength shifts, and pharmacological support.

What Alternative Hair Removal Treatments Are Available For Non-Candidates? Find The Best Solution Beyond Diode Lasers

Discover effective hair removal alternatives like IPL and electrolysis for those ineligible for diode laser treatment due to hair color or medical history.

What Types Of Needles Are Used In Rf Microneedling Machine Systems? Comparing Insulated Vs Non-Insulated Gold Needles

Understand the differences between insulated and non-insulated gold-plated needles in RF microneedling systems for optimal skin treatment results.

What Are The Ideal Laser Wavelengths For Laser Hair Removal On Medium Skin Types? Expert Guide For Fitzpatrick Iv

Learn why Nd:YAG, Diode, and Alexandrite are the top choices for Fitzpatrick Type IV skin, balancing safety and effective hair follicle destruction.

What Is The Recovery Time Associated With Cryolipolysis? Get Back To Work Instantly With Zero Downtime

Learn why Cryolipolysis requires zero downtime. Discover recovery expectations, post-treatment sensations, and the biological timeline for results.

Why Is Sunscreen Mandatory After Laser Scar Removal? Protect Your Results And Prevent Pih

Learn why high-efficiency sunscreen is vital after laser scar removal to prevent PIH, protect the skin barrier, and ensure uniform healing.

How Do 808Nm Diode Lasers Function For Hair Removal? The Gold Standard For Permanent Hair Reduction And Precision

Learn how 808nm diode laser technology uses semiconductor precision and selective melanin absorption to achieve permanent hair removal results.

How Can The Effects Of Red Light Therapy Be Improved? Maximize Hair Growth With These 4 Pro Strategies

Learn how to enhance red light therapy results for hair growth by combining it with Minoxidil, scalp massage, nutrition, and protective styling.

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.

What Is The Physical Mechanism Behind Repetitive Pulse Nd:yag Laser? Unlock The Methemoglobin Advantage

Learn how Nd:YAG lasers use repetitive pulse technology to convert hemoglobin into methemoglobin, enhancing absorption for superior vessel closure.

How Does A 15Ms Pulse Width In Diode Laser Hair Removal Ensure Epidermal Safety? Protect Your Skin With Precision

Learn how the 15ms pulse width protects the epidermis during diode laser treatments by leveraging thermal relaxation time for safer hair removal.

What Is The Clinical Purpose Of Applying A Local Anesthetic Ointment Prior To Fractional Laser Treatment?

Learn how local anesthetic ointments enhance fractional laser treatments by managing pain and enabling higher energy efficacy.

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.

What Is The Technical Rationale For Combining Co2 Laser And Prp For Urinary Incontinence? Maximize Tissue Regeneration

Learn how CO2 fractional lasers and PRP growth factors work synergistically to restore pelvic floor structure and improve urinary control.

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.