How Effective Is The Combination Of Polidocanol And A Q-Switched Nd:yag Laser For Treating Vascular Lesions? (91% Success)

Discover how combining polidocanol with Q-switched Nd:YAG laser therapy achieves a 91% improvement rate for vascular lesions in just 2-3 cycles.

What Are The Specified Treatment Areas For Hair Removal Using The 808 Nm Diode Laser? Achieve Full-Body Smoothness

Discover why the 808nm diode laser is the gold standard for full-body hair removal, from facial precision to large areas like legs and back.

How Does Super Hair Removal (Shr) Compare To Ipl? Discover The Pain-Free Future Of Hair Removal

Compare SHR vs. IPL for safety, comfort, and efficacy. Learn why SHR's in-motion technology is superior for all skin types and permanent results.

What Is The Application Of Ipl Shr Laser Technology In Treating Thread Veins? Professional Solutions For Skin Clarity

Learn how IPL SHR laser technology targets facial thread veins, reduces diffuse redness, and improves overall skin texture for clearer results.

What Does The Acronym 'Laser' Stand For? Unlock The Science Behind Stimulated Emission & Precision Light

Learn the meaning of LASER and its working principles. Explore how wavelength-specific light energy converts to heat for targeted cell destruction.

What Are The Power Consumption And Efficiency Characteristics Of Laser Diodes? Maximize Your Clinic's Energy Savings

Learn how laser diodes offer 30%+ efficiency and low voltage operation, making them the superior choice for high-power medical laser systems.

What Is The Clinical Significance Of Monitoring Vaginal Ph Levels During Fractional Co2 Laser Treatment? (Gsm Guide)

Learn how vaginal pH acts as a biological barometer for CO2 laser efficacy in treating GSM, restoring health, and preventing infections.

What Are The Primary Functions Of A Chilled Sapphire Window? Enhancing Safety & Efficacy In Laser Hair Removal

Learn how the Chilled Sapphire Window protects the skin, reduces pain, and improves laser energy delivery for superior hair removal results.

How Do Specialized Vaginal Probes In Fractional Co2 Laser Systems Ensure Consistency? Achieving Precision In Clinics

Learn how automated vaginal probes in Fractional CO2 Laser systems ensure uniform energy distribution and consistent tissue repair results.

What Is The Role Of Wet Or Cold Gauze During Diode Laser Surgery For Hs? Protect Skin & Enhance Treatment Safety

Learn how wet or cold gauze acts as a vital thermal barrier during Diode Laser HS surgery to prevent burns and protect healthy tissue via cooling.

What Is The Technical Justification For Utilizing A 694 Nm Wavelength In Ruby Laser Hair Removal? High Melanin Efficacy

Understand why the 694 nm Ruby Laser wavelength is the technical standard for high melanin absorption and effective hair removal for light skin.

What Is The Significance Of A 250 Μm Optical Spot Diameter? Achieve Precision In Co2 Fractional Laser Systems

Learn how the 250 μm spot diameter balances high-intensity ablation with tissue safety for superior skin reconstruction results.

Why Is A Deep-Penetrating Fractional Laser Required For Hypertrophic Burn Scars? Achieve Deep Tissue Remodeling

Learn why 4mm deep-penetrating fractional lasers are essential for breaking down dense fibrous bundles in hypertrophic burn scars effectively.

What Is The Physical Mechanism Of The 1565 Nm Non-Ablative Fractional Laser System In The Treatment Of Aga? Hair Growth

Learn how the 1565 nm non-ablative fractional laser uses Microscopic Thermal Zones to trigger hair regrowth and revitalize follicles for AGA relief.

How Does Laser-Assisted Drug Delivery (Ladd) Enhance Scar Treatment? Unlock Superior Results With Fractional Lasers

Learn how LADD uses fractional lasers to create micro-channels, bypassing the skin barrier to deliver medications deep into dense scar tissue.

Why Is A Minimum Incubation Time Of 60 Minutes Required For 5-Ala After Co2 Fractional Laser? Ensure Clinical Efficacy

Learn why the 60-minute incubation for 5-ALA is critical for biochemical conversion to PpIX following CO2 Fractional Laser pretreatment.

What Is The Function Of The Sapphire Cooling Tip? Enhance Safety And Comfort In Diode Laser Hair Removal

Learn how sapphire cooling tips protect the skin, reduce pain, and enable higher energy fluence for effective laser hair removal treatments.

Why Is Specialized Post-Operative Care Necessary Following Radio Frequency (Rf) Ablation? Essential Healing Guide

Learn why specialized aftercare following RF ablation is vital for preventing depigmentation, speeding up recovery, and ensuring flawless results.

Why Is Sun Protection Mandatory For Laser Treatments? Prevent Pih And Ensure Optimal Healing Outcomes

Learn why strict photoprotection is essential before and after laser therapy to prevent hyperpigmentation and protect collagen remodeling.

What Is The Function Of A Handpiece Equipped With An Active Sapphire Cooling Tip? Ensure Painless & Safe Laser Treatments

Learn how active sapphire cooling tips protect the epidermis and enable high-energy laser hair removal for superior clinical results and safety.

How Do Gold-Plated Sidewalls In A Laser Handpiece Contribute To Energy Utilization? Boost Your Clinic's Clinical Results

Learn how gold-plated chambers use photon recycling to maximize energy absorption, ensuring high clinical efficacy with lower power consumption.

Why Is A Fractional Ablative Er:yag Laser Used For Facial Angiofibromas? Precision Depth Control For Nodule Removal

Learn why the AF Er:YAG laser is the gold standard for treating residual angiofibroma nodules with precise depth control and minimal scarring.

How Does The Adjustment Of Dwell Time In Fractional Laser Systems Impact Tissue Safety? Master Thermal Control

Learn how adjusting dwell time in fractional laser systems balances ablation depth with tissue safety to prevent lateral thermal damage.

Why Is It Necessary To Adjust The Focal Spot Size Of A Laser Device? Optimize Skin Lesion Removal And Precision

Learn how adjusting laser focal spot size balances energy density and penetration for safe, efficient removal of skin lesions like benign tumors.

What Is The Primary Mechanism Of Action For Fractional Co2 Laser Equipment In Vva? Achieve Non-Hormonal Tissue Renewal

Learn how Fractional CO2 lasers treat Vulvovaginal Atrophy by stimulating protein denaturation, fibroblast activation, and collagen regeneration.

How Does A Co2 Laser Machine Work? Master The Mechanics For Superior Cutting & Engraving

Discover how a CO2 laser's gas tube, mirrors, and lens create a focused beam to precisely cut and engrave wood, acrylic, leather, and more.

What Is The Function Of A Sapphire Contact Cooling Handpiece? Enhancing Safety And Efficacy In Diode Laser Hair Removal

Learn how sapphire contact cooling protects the skin and enables higher fluence for superior laser hair removal results.

What Is The Primary Role Of Photopneumatic Technology In Bbl Or Ipl Hair Removal? Maximize Comfort And Efficiency

Learn how Photopneumatic Technology uses vacuum suction to enhance light-based hair removal by reducing pain and improving follicle energy absorption.

What Is The Primary Mechanism Of Action For A Medical-Grade Fractional Co2 Laser System For Gsm? Restore Vaginal Health

Learn how Fractional CO2 Laser systems use micro-ablation to stimulate collagen synthesis and restore vaginal health for patients with GSM.

What Role Does The Medical-Grade Intravaginal Fractional Laser Probe Play? Precision Energy Delivery For Rejuvenation

Learn how medical-grade intravaginal fractional laser probes ensure precise energy delivery, safety, and uniform thermal distribution for remodeling.

Can You Overdo Red Light Therapy For Hair? Maximize Results By Avoiding This Common Mistake

Learn why overusing red light therapy for hair can reduce effectiveness. Discover the optimal session duration and frequency for best results.

What Is The Significance Of The Dot Spacing Setting In Fractional Co2 Laser Treatments For Vaginal Health? | Belis Guide

Learn how DOT spacing optimizes fractional CO2 laser treatments for vaginal health, balancing tissue regeneration with rapid recovery times.

What Are The Advantages Of The Deep Ablation Mode In Fractional Laser Systems? Advanced Solutions For Burn Scars

Learn how Deep Ablation Mode treats thick burn scars by penetrating 3.5mm into the dermis while preserving the skin surface for faster healing.

What Are The Advantages Of Low-Fluence Diode Lasers Vs Ruby Or Alexandrite For Becker's Nevus Hypertrichosis?

Discover why low-fluence diode lasers provide superior safety and depth for treating hypertrichosis in Becker’s nevus compared to traditional lasers.

How Does Wavelength Conversion Efficiency Improve Diode-Pumped Laser Performance? Unlock Power And Longevity

Learn how high wavelength conversion efficiency enhances laser penetration for deep-tissue therapy while extending component lifespan.

What Role Does The Co2 Laser Play In Surgical Management Of Hidradenitis Suppurativa? Precision Deroofing & Hemostasis

Learn how CO2 lasers optimize HS treatment through precise deroofing, bloodless surgery, and superior healing outcomes for chronic sinus tracts.

What Role Do Large Spot Size Laser Handpieces Play In Children's Hair Removal? Maximize Efficiency & Patient Compliance

Learn how large spot size laser handpieces optimize pediatric hair removal by reducing procedure time and improving deep follicle penetration.

Why Is A Six-Week Interval Recommended For Fractional Co2 Laser Gsm Treatment? Optimize Tissue Regeneration Results

Learn why the 6-week gap in Fractional CO2 laser protocols is essential for collagen remodeling, vascular repair, and cumulative GSM recovery.

Why Is A Co2 Laser System Utilized For The Ablation Of Granuloma Annulare? Achieve Precise Lesion Clearance

Learn why CO2 lasers are the gold standard for granuloma annulare, offering precise collagen ablation and faster tissue repair.

Why Is An Ablative Fractional Laser More Effective Than A Non-Ablative Fractional Laser? Boost Vitiligo Therapy Results

Discover why ablative lasers outperform non-ablative options in vitiligo therapy through skin barrier breach and enhanced drug delivery.

How Do Cutoff Filters In Ipl Systems Achieve Multi-Functionality? Transform One Device Into A Versatile Clinical Tool

Learn how IPL cutoff filters enable multi-functionality by selecting precise wavelengths for safe, effective treatments across all skin types.

What Is The Therapeutic Rationale For Combining Sunlight With Fractional Co2 Laser? Boost Vitiligo Repigmentation

Learn how Fractional CO2 Laser primes recalcitrant vitiligo lesions to maximize the regenerative effects of sunlight for effective repigmentation.

Why Is Thin-Layer Ablation Preferred For Granuloma Annulare Co2 Treatment? Protect Skin Integrity And Prevent Scarring

Learn why superficial thin-layer ablation is the superior CO2 laser strategy for Granuloma Annulare to ensure clear skin without deep scar tissue.

What Are The Limitations Of Traditional External Safety Glasses? Discover Risks In Precision Laser Hair Removal

Learn why standard laser safety glasses fail during periorbital treatments and the risks of ocular exposure near the eyebrows and eyelids.

What Is The Primary Function Of Medical-Grade Co2 Fractional Laser Equipment? Reversing Vulvar Vestibulodynia & Atrophy

Discover how CO2 fractional laser equipment stimulates collagen and angiogenesis to treat Vulvar Vestibulodynia and improve vaginal mucosal health.

Why Are Hybrid Laser Platforms Effective For Complex Dermal Melanin? Discover The Dual Co2 & 1570Nm Advantage

Learn how combining CO2 and 1570nm Erbium-glass lasers provides mechanical drainage and thermal remodeling for stubborn dermal melanin lesions.

Why Is Fractional Co2 Laser Better For Pws In Dark Skin? Bypass Melanin Shielding For Superior Results

Learn how Fractional CO2 Laser technology bypasses melanin shielding to effectively treat Port-Wine Stains (PWS) in darker skin tones.

What Are The Advantages Of Using A Co2 Fractional Laser System For Vaginal Treatment? 360-Degree Precision Explained

Discover how 360-degree circular probes and CO2 fractional technology ensure uniform vaginal remodeling, collagen growth, and rapid recovery.

What Is The Physical Design Advantage Of The Dual-Wavelength Hybrid Mode Laser Hair Removal Handpiece?

Learn how the 20-bar vertical stacking architecture in hybrid laser handpieces enables simultaneous dual-wavelength emission for superior results.

What Are The Advantages Of A 2Mm Spot Size For Q-Switched Laser Onychomycosis Treatment? Precision Fungal Eradication

Discover how a 2mm spot size enhances Q-switched laser treatment for nail fungus through precision, high energy density, and superior patient safety.

What Roles Does A Fractional Co2 Laser Play In The Treatment Of Onychomycosis? Advanced Solutions For Nail Fungus

Discover how Fractional CO2 Laser technology treats onychomycosis through thermal pathogen clearance and the creation of ablative micro-channels.

What Are The Technical Advantages Of Using The Dot Scanning Mode In Carbon Dioxide (Co2) Laser Treatments For Hair Loss?

Learn how DOT scanning mode optimizes CO2 laser hair loss treatments through fractional energy, micro-pores, and rapid healing technology.

What Is The Operational Mechanism Of Medical Co2 Laser Systems? Precision Cutting & Fast Healing Explained

Learn how medical CO2 lasers use water absorption for precise tissue vaporization, coagulation, and faster postoperative recovery.

Why Is It Critical For Ablative Carbon Dioxide (Co2) Laser Systems To Maintain A Pulse Duration Of Less Than 1Ms?

Learn why sub-1ms pulse duration is vital for CO2 lasers to prevent thermal damage and ensure patient safety during skin ablation.

What Are The Advantages Of A Pulse Cryogen Spray In A Dcd? Boost Laser Safety And Efficacy

Learn how Dynamic Cooling Device (DCD) technology protects the epidermis while maximizing laser treatment energy for better results.

What Is The Purpose Of Using Disposable Treatment Tips In Fractional Laser Handpieces? Ensuring Hygiene And Precision

Learn how disposable treatment tips in fractional laser handpieces prevent cross-infection and ensure consistent optical energy for better results.

What Are The Core Advantages Of Fractional Photothermolysis Equipment? Discover Safe, Rapid Skin Resurfacing

Learn how Fractional Photothermolysis uses MTZs and intact tissue islands to reduce downtime and PIH risk compared to full-surface ablation.

How Does A Dynamic Epidermal Cooling Device Maintain Safety During Laser Hair Removal For Acne Keloidalis Nuchae?

Learn how Dynamic Epidermal Cooling protects skin during AKN laser hair removal by using cryogen spray to prevent burns and secondary scarring.

What Are The Advantages Of Using Large Spot Size Laser Handpieces? Boost Speed & Depth For Professional Hair Removal

Learn how large spot sizes reduce laser scattering, increase dermis penetration, and cut treatment times for more effective hair removal results.

What Precautions Are Necessary When Using Topical Anesthetics? Ensure Safe Laser Acne Scar Treatment With Blt Cream

Learn essential safety protocols for using Benzocaine, Lidocaine, and Tetracaine (BLT) topical anesthetics to prevent toxicity in laser treatments.

How Do The Pulse Frequency And Spot Size Settings Of A Medical Co2 Laser Affect The Results Of Xanthelasma Ablation?

Learn how pulse frequency and spot size settings optimize CO2 laser precision and depth for safe, effective Xanthelasma removal.

What Are The Primary Advantages Of Using An Ablative Carbon Dioxide Laser For The Treatment Of Ear Keloids?

Learn how ablative CO2 lasers treat ear keloids through tissue vaporization, collagen remodeling, and laser-assisted drug delivery for better results.

How Do High-Precision Microneedle Or Fractional Laser Devices Synergize With Exosome Lyophilized Powder In Skin Care?

Unlock the synergy between fractional lasers/microneedles and exosomes to bypass skin barriers and maximize deep dermal regeneration and repair.

Why Is A 1064 Nm Nd:yag Laser System Utilized For Photo-Mediated Ultrasound Therapy? Deep Vascular Treatment Experts

Learn why the 1064 nm Nd:YAG laser is the gold standard for PUT, offering deep penetration and epidermal safety for complex vascular malformations.

How Does The Fluence Calibration In Ruby Laser Devices Facilitate Treatment? Master Safety For All Fitzpatrick Types

Learn how fluence calibration in Ruby Lasers ensures safe, effective hair removal for Fitzpatrick skin types V and VI by optimizing energy density.

How Does Vitamin C Serum After Fractional Co2 Laser Benefit Macular Amyloidosis? Boost Absorption & Pigment Correction

Learn how combining Fractional CO2 Laser with Vitamin C serum enhances Macular Amyloidosis treatment via 20x better drug delivery and healing.

How Do Professional Cold Air Cooling Devices Assist During High-Energy Laser Treatments? Enhance Safety And Efficacy

Learn how cold air cooling protects the skin, prevents burns, and enables higher energy laser settings for better clinical results.

What Role Does The Sapphire Window Play In Laser Hair Removal? Enhancing Pneumatic Flattening & Efficiency

Learn how the sapphire window in laser hair removal systems enables pneumatic skin flattening to improve energy delivery and patient comfort.

What Is The Clinical Significance Of Applying An Occlusive Ointment After Fractionated Co2 Laser? Enhance Skin Healing

Learn why occlusive ointments are vital post-CO2 laser to prevent TEWL, accelerate re-epithelialization, and minimize scarring.

What Is The Primary Role Of A Medical-Grade Co2 Laser System In The Surgical Management Of Eccrine Poroma?

Learn how medical-grade CO2 lasers provide high-precision ablation and hemostatic control for the surgical management of eccrine poroma.

How Does Fractional Co2 Laser-Assisted Therapy Reduce Onychomycosis Risks? The Safe Alternative To Oral Antifungals

Learn how Fractional CO2 Laser therapy minimizes systemic risks like liver toxicity and drug interactions when treating onychomycosis effectively.

What Role Does The Deep Fx Mode Of Fractional Co2 Laser Play In Xanthelasma Treatment? Precision Dermal Lipid Clearance

Discover how Deep Fx mode utilizes micro-ablative columns to vaporize deep xanthelasma lipids while promoting rapid collagen regeneration.

Why Wear Wavelength-Specific Goggles With Side Shields For Laser Hair Removal? Vital Eye Safety In Clinical Laser Use

Learn why specific laser goggles and side shields are critical for blocking invisible radiation and preventing permanent retinal damage.

What Is The Effectiveness Of Combining Systemic Therapy With Laser Therapy For Onychomycosis? Achieve 100% Cure Rates

Discover how combining systemic therapy and laser treatment achieves superior cure rates and faster clearance for persistent onychomycosis.

Is It Beneficial To Combine Laser Cap Therapy With Other Hair Loss Treatments? Maximize Regrowth With Synergy

Learn how combining LLLT laser caps with Minoxidil and PRP accelerates hair growth and improves absorption for superior clinical results.

What Other Conditions Besides Hair Loss Can Lllt Be Effective For? Discover Scalp Health Benefits

Explore how LLLT treats dandruff and itchy scalps, and learn why pulsed light is the superior method for scalp therapy results.

What Are The Pre-Treatment And Aftercare Recommendations For Radiofrequency (Rf) Therapy? Safety & Results Guide

Learn essential RF therapy pre-treatment and aftercare tips to ensure safety, minimize irritation, and maximize collagen stimulation results.

What Are The Advantages Of Diode Lasers? Unlock High Efficiency And Precision For Your Medical Practice

Discover why diode lasers lead in efficiency, reliability, and cost-effectiveness compared to traditional laser systems.

What Is A Back Facial And What Skin Concerns Can It Address? Achieve Flawless, Clear Skin For Hard-To-Reach Areas

Learn how back facials target bacne, clogged pores, and uneven texture through professional cleansing, exfoliation, and deep hydration.

How Consistent Are The Results Of Laser Therapy For Hair Loss? Expert Insights On Efficacy And Clinical Outcomes

Discover the reality of laser hair therapy results. Learn about Low-Level Laser Therapy (LLLT), its efficacy rates, and how it stimulates regrowth.

What Precautions Should Be Taken After A Microneedling Treatment? Expert Guide To Safe Healing And Best Results

Learn essential microneedling aftercare: from infection prevention and cooling techniques to the ideal recovery timeline for glowing, healthy skin.

What Are The Specific Design Requirements For Laser Equipment Probes For Eyebrows? Precision Probes For Facial Contours

Learn why small, precision-engineered probes and adjustable spot sizes are vital for safe laser treatments near the orbital bone and eyebrows.

Why Is It Necessary To Precisely Control Refrigerant Spray In Laser Systems? Balance Safety And Treatment Efficacy

Learn why precise refrigerant timing prevents skin burns and avoids a 15% reduction in laser energy for hair removal.

How Does Fractional Co2 Laser Technology Differ From Fully Ablative Mode In Onychomycosis? Maximize Treatment Efficacy

Understand the difference between fractional and fully ablative CO2 lasers for Onychomycosis, from drug delivery to surface vaporization.

How Does A Professional-Grade Fractional Co2 Laser System With A Large Square Spot Handpiece Boost Clinical Efficiency?

Discover how large square spot handpieces optimize CO2 laser treatments by reducing procedure time and ensuring uniform energy distribution.

What Is The Necessity Of An Automatic Lockout Protection Mechanism In Long-Pulse Nd:yag Laser Systems? Expert Safety Guide

Learn how automatic lockout mechanisms in Nd:YAG lasers prevent thermal injury by monitoring epidermal temperatures in real-time during skin remodeling.

What Role Does A Scanning Handpiece With A Large Spot Size Play? Maximize Efficiency In Diode Laser Hair Removal

Discover how scanning handpieces with large spot sizes enhance clinical speed, safety, and penetration depth in professional diode laser systems.

What Is The Core Physical Mechanism Of Medical-Grade Fractional Co2 Laser Systems In Treating Onychomycosis? Explained

Learn how Fractional CO2 Lasers treat nail fungus through selective photothermolysis, thermal destruction, and micro-channel drug delivery.

Why Is Fractional Co2 Laser + Systemic Antifungals The Best For Onychomycosis? Achieve Rapid Clearance

Learn how Fractional CO2 Laser and systemic drugs provide a dual-front attack to cure refractory onychomycosis faster and more effectively.

What Are The Technical Advantages Of Using Co2 Laser Surgical Cutting Compared To A Traditional Scalpel For Scar Release?

Discover why CO2 lasers outperform scalpels for scar release through micron-level precision, bloodless surgery, and faster recovery times.

What Role Does A Medical-Grade Fractional Co2 Laser Play In Treating Nail Psoriasis? Boost Drug Delivery Efficiency

Learn how Fractional CO2 Lasers create micro-channels in nail plates to enhance drug delivery for psoriasis treatments like Methotrexate.

What Is The Purpose Of Applying Medical-Grade Occlusive Ointment After A Fractional Laser Ablation Treatment? Accelerate Healing Now

Learn why medical-grade occlusive ointment is vital after fractional laser ablation to speed up healing, prevent scabbing, and protect your skin.

Why Is A Deep Fractional Mode Essential For Co2 Laser Equipment? Master The Pinhole 4.0 Method For Scars

Discover why 4mm penetration in deep fractional CO2 laser modes is critical for treating hypertrophic scars and deep-seated fibrosis effectively.

What Are The Clinical Advantages Of The Alexandrite Laser Over The Ruby Laser? Discover 755Nm Wavelength Benefits

Compare Alexandrite vs. Ruby lasers for hair removal. Learn why the 755nm wavelength offers deeper penetration, faster speed, and enhanced safety.

What Is The Clinical Benefit Of Combining Long-Pulse Nd:yag Lasers With Co2 Lasers For Treating Hs? Synergistic Remission

Discover how combining CO2 laser ablation with Nd:YAG follicular targeting treats existing HS lesions and prevents future flares for long-term care.

What Are The Benefits Of A Top-Hat Laser Energy Distribution? Maximize Safety And Uniformity In Aesthetic Treatments

Learn why Top-hat laser profiles outperform Gaussian beams by providing uniform energy, preventing hot spots, and ensuring consistent treatment.

Is There A Significant Difference In The Risk Of Inducing Fox-Fordyce Disease? Understanding Technology & Safety

Learn why Fox-Fordyce disease risk is linked to thermal energy management rather than specific IPL, Alexandrite, or Diode laser technologies.

What Effect Does Laser Cooling Gel Have With Forced Air Cooling? Maximize Clinical Safety And Thermal Control

Discover why laser cooling gel is thermally neutral when paired with forced air cooling and how convection dominates skin temperature regulation.

What Is The Primary Function Of A Co2 Laser For Vva? Discover Non-Hormonal Vaginal Remodeling

Learn how fractional CO2 lasers treat Vulvovaginal Atrophy (VVA) by stimulating collagen and restoring tissue hydration without hormones.

How Does An Rf-Excited Fractional Co2 Laser System Function For Sui? Advanced Tissue Remodeling Explained

Learn how RF-excited fractional CO2 lasers treat Stress Urinary Incontinence through micro-thermal injury and collagen regeneration.