Who Is Not Suitable For Ipl Hair Removal? Key Factors To Avoid Risks

Learn who should avoid IPL hair removal due to skin tone, hair color, medical conditions, or medications to prevent burns and ineffectiveness.

Why Is Ensuring Tight Contact Between The Diode Laser Cooling Handpiece And The Skin Critical? Prevent Thermal Injury

Learn why handpiece contact is vital in diode laser treatments to prevent blistering, localized overheating, and thermal injury through sapphire cooling.

Does Ipl Hair Removal Have Other Benefits? Discover The Skin Rejuvenation Perks

Beyond hair removal, IPL treatments can improve skin tone, reduce redness, and stimulate collagen for firmer skin. Learn the dual benefits.

What Are The Clinical Advantages Of Using Multi-Functional Ipl And Nd:yag Platforms? Achieve Full-Depth Skin Rejuvenation

Discover how combining IPL and Nd:YAG lasers provides superior clinical outcomes by targeting superficial pigment and deep dermal layers.

Who Should Not Undergo Laser Therapy For Hair Loss? Essential Contraindications & Safety Guide

Learn who should avoid laser hair loss therapy, from those on photosensitizing drugs to patients with systemic health issues like heart disease.

How Are High-Resolution Digital Imaging And Software Utilized For Hair Removal Efficacy? Data-Driven Success Proof

Learn how industrial-grade imaging and software create quantifiable metrics for hair removal efficacy, ensuring objective clinical results.

What Role Do Medical Laser Diodes (Ld) And Light Emitting Diodes (Led) Play In Hair Restoration? Boost Follicle Growth

Learn how LD and LED photobiomodulation (630nm-660nm) stimulates hair follicles and improves microcirculation for effective hair restoration.

What Are The Selection Criteria For Using 1064Nm Nd:yag Versus 694Nm Ruby Lasers? Choosing The Best Hair Removal Tech

Understand the key selection criteria between 1064nm Nd:YAG and 694nm Ruby lasers, focusing on skin tone safety and energy penetration depth.

What Is The Specific Function Of The Pumping Mechanism In High-Power Medical Laser Equipment? Explained For Pros

Learn how laser pumping mechanisms achieve population inversion and stimulated emission in high-power medical aesthetic devices.

What Are The Primary Functions Of Integrated Cooling Systems In Pediatric Laser Hair Removal? Ensuring Safety & Comfort

Learn how integrated cooling systems protect pediatric skin during laser hair removal by preventing burns and improving patient tolerance.

How Do Long-Pulse Settings In Nd:yag Laser Hair Removal Systems Contribute To Treatment Effectiveness? Master Your Results

Learn how long-pulse Nd:YAG settings optimize thermal relaxation and conduction to destroy follicles safely and effectively across all skin types.

What Is The Specific Value Of Using A Long-Pulsed Nd:yag Laser? Effective Care For Inflammatory Scalp Diseases

Learn how the 1064nm Long-pulsed Nd:YAG laser treats Folliculitis Decalvans by penetrating deep tissue while protecting inflamed skin surfaces.

What Are The Primary Advantages Of Utilizing The 1064Nm Wavelength? Master Deep Hair Removal For Darker Skin Tones

Learn why the 1064nm Nd:YAG laser is the gold standard for dark skin hair removal, offering deep penetration and superior epidermal safety.

What Are The Clinical Advantages Of Using A Dual-Platform System? Maximize Efficiency With Ipl And Nd:yag Laser Synergy

Explore how dual-platform IPL and Nd:Yag systems deliver multi-layer skin treatments, targeting surface pigment and deep vascular issues.

How Does Pulse Energy Density Influence The Safety Of Laser Hair Removal Equipment? Mastering J/Cm² For Safety

Learn how pulse energy density (J/cm²) impacts safety and efficacy in laser hair removal, including thermal thresholds and retinal protection.

Why Is The Long-Pulse Nd:yag Laser Safer For Dark Skin? Discover The 1064Nm Advantage For Hair Removal

Learn how the 1064nm wavelength and long-pulse technology ensure safe, effective laser hair removal for dark and tanned skin types.

What Principle Governs The Use Of A 35 To 65 Ms Pulse Width In Nd:yag Laser Hair Removal? Master Clinical Safety

Learn how Thermokinetic Selectivity and Thermal Relaxation Time (TRT) optimize Nd:YAG laser settings for safe, effective hair removal.

Why Is Precise Short Pulse Duration Critical In Laser Hair Removal? Ensure Clinical Safety & Prevent Skin Burns

Learn why precise pulse duration and Thermal Relaxation Time (TRT) are essential for safe laser hair removal and preventing skin damage.

What Are The Technical Advantages Of The Long-Pulsed 1064-Nm Nd:yag Laser? Safe Hair Removal For Dark Skin

Learn why the 1064-nm Nd:YAG laser is the gold standard for Fitzpatrick IV-VI skin, offering deep penetration and maximum epidermal safety.

Why Is A Cooled Contact Disc Often Integrated Into Nd:yag Laser Hair Removal Equipment? Maximize Safety And Efficacy

Learn how cooled contact discs in Nd:YAG lasers protect the skin and improve follicle penetration through blood displacement and conductive cooling.

How Does The Long-Pulse 755-Nm Alexandrite Laser Utilize Selective Photothermolysis? The Physics Of Permanent Hair Reduction

Learn how 755-nm alexandrite lasers target melanin through selective photothermolysis to destroy hair follicles safely and permanently.

Does Ipl Work On All Skin Types? The Critical Role Of The Fitzpatrick Scale In Safety And Results

Discover why IPL's effectiveness and safety depend on your Fitzpatrick skin type. Learn the risks for darker skin and find safer alternatives.

Does Ipl Hair Removal Really Work? Unlock Long-Term Hair Reduction With Science

Learn how IPL technology uses light to target hair follicles for lasting results. Discover if you're an ideal candidate based on skin and hair type.

How Often Should You Use An Ipl Machine? A Guide To The Perfect Treatment Schedule

Learn the ideal IPL machine frequency for effective hair removal, from the initial weekly phase to long-term maintenance schedules.

What Is Laser Lipolysis And How Does It Work? Master Precision Body Contouring And Skin Tightening

Learn how laser lipolysis uses thermal energy to liquefy fat, stimulate collagen, and provide superior body sculpting with minimal recovery time.

What Technical Advantages Does The 755Nm Alexandrite Laser Offer? Unlock Gold Standard Hair Removal For Light Skin

Discover why the 755nm Alexandrite laser is the gold standard for Fitzpatrick I-III skin, offering superior melanin absorption and rapid results.

How Do The 755Nm Alexandrite And 808Nm Diode Laser Compare Regarding Paradoxical Hypertrichosis Risk?

Compare 755nm Alexandrite and 808nm Diode lasers. Learn why the 808nm wavelength is safer for preventing Paradoxical Hypertrichosis in laser clinics.

What Is The Primary Function Of The Long-Pulse 755Nm Alexandrite Laser? Master Selective Photothermolysis For Hair Removal

Learn how the 755nm Alexandrite laser uses long-pulse technology to target melanin and destroy hair follicles safely and effectively.

What Is The Technical Logic Behind Setting The Pulse Width To 4 Ms In Laser Hair Removal? Expert Efficacy Analysis

Learn how a 4 ms pulse width optimizes selective photothermolysis to destroy hair follicles while protecting surrounding skin during laser treatments.

Why Is The Application Of Specialized Repair Creams Or Ice Packs A Critical Step In The Nd:yag Laser Hair Removal Protocol? Ensure Patient Safety

Learn why post-treatment cooling and repair agents are essential in Nd:YAG laser protocols to prevent thermal injury and speed up skin recovery.

What Are The Advantages Of 1064Nm Nd:yag Laser For Underarm Hair Removal? Achieve Deep Penetration & Maximum Safety

Learn why 1064nm Nd:YAG lasers are superior for underarm hair removal, offering deep follicular targeting and safety for all skin tones.

What Is Nd:yag Laser Good For? Achieve Safe, Deep-Tissue Treatments For All Skin Types

Discover the key applications of Nd:YAG lasers, including hair removal, tattoo removal, skin rejuvenation, and vascular treatment, especially for darker skin tones.

Does Ipl Hair Removal Actually Work? Achieve Long-Term Hair Reduction

Discover how IPL technology provides permanent hair reduction for suitable skin and hair types. Learn the science, benefits, and limitations.

What Role Does Professional Hair Removal Conductive Gel Play In The Interface? Enhance Laser Efficacy And Safety

Learn how professional hair removal gel acts as an optical bridge to eliminate reflection losses and ensure safe, effective laser treatments.

Why Is The Integration Of Skin Cooling Systems Necessary During Nd:yag Laser Treatments? Boost Safety & Energy Efficiency

Learn how skin cooling protects the epidermis and enables higher energy levels for effective, pain-free Nd:YAG laser hair removal treatments.

Why Might Antibiotic Cream Be Necessary After Nd:yag Laser? Protect Your Results And Skin Health

Learn why antibiotic cream is vital after Nd:YAG laser hair removal to prevent infection, reduce folliculitis, and ensure rapid skin recovery.

Why Is Deep Penetration Critical For Long-Pulse 1064Nm Nd:yag Lasers? Ensure Safe, Effective Results For All Skin Types

Learn how the deep penetration of 1064nm Nd:YAG lasers enables safe hair removal and vascular treatment, especially for dark skin tones.

What Spot Sizes Are Available For The Diode Laser Handle And What Are Their Applications? Optimize Your Clinic Results

Learn how the 15x30mm and 15x10mm Diode Laser spot sizes maximize hair removal speed for large areas and precision for delicate zones.

What Are The Capabilities Provided By The Integrated Iot Technology In A Laser Hair Removal Device? Maximize Your Roi

Unlock business growth with IoT-enabled laser devices. Monitor real-time usage, track performance, and automate ROI reporting for your clinic.

What Qualifications Are Required For Personnel Operating High-Power Laser Systems? Safety Training & Technical Expertise

Learn the essential safety and technical qualifications needed to operate high-power laser systems and maintain a secure clinic environment.

What Are Some Of The Different Types Of Cosmetic Lasers Available For Procedures? Choose The Right Technology

Learn about Ablative, Non-Ablative, CO2, Erbium, and Alexandrite lasers to choose the best technology for skin rejuvenation and hair removal.

How Quickly Do You See Ipl Results? A Realistic Timeline For Clearer Skin

Learn the realistic IPL treatment timeline: see initial changes in a week, with full results building over several sessions for lasting skin clarity.

Can Ipl Be Used On All Skin Types? Understanding Risks For Darker Skin Tones

IPL is not safe for all skin types. Learn why it poses high risks for Fitzpatrick types V & VI, causing burns and pigmentation damage.

What Are The Technical Benefits Of Utilizing A Burst Pulse Mode? Enhance Hair Removal Safety With Thermal Selectivity

Learn how Burst Pulse mode uses thermal relaxation to protect the skin while ensuring cumulative damage to hair follicles for safer laser treatments.

What Is The Primary Objective Of The Pulse Stacking Technique During Nd:yag Laser Hair Removal? Maximize Results Now

Learn how pulse stacking in Nd:YAG laser hair removal builds cumulative thermal energy to destroy resistant follicles and improve clinical success.

How Does The Integration Of Rf Energy Enhance Safety For Various Skin Types? Advanced Protection For Darker Skin Tones

Learn how RF energy decoupling from skin pigmentation reduces burn risks and enhances hair removal safety for Fitzpatrick skin types IV-VI.

What Is The Function Of 0.65Ms Short Pulse Technology In Laser Hair Removal? Achieve Precision Follicle Destruction

Learn how 0.65ms short pulse technology maximizes hair follicle destruction while protecting surrounding skin through thermal confinement.

Why Is Bipolar Radiofrequency (Rf) Technology Integrated Into Hair Removal Processes? Safe For Dark Skin & Light Hair

Learn how bipolar RF technology bypasses melanin limitations to provide safe hair removal for dark skin and effective treatment for light hair.

How Does Selective Photothermolysis Work In Long-Pulsed Nd:yag Hair Removal? Mastering The 1064Nm Science

Learn how the 1064nm Nd:YAG laser uses selective photothermolysis to target deep follicles while protecting skin, especially for darker skin tones.

Why Is A 24-Month Follow-Up Necessary For Nd:yag Laser Hair Removal? Ensure Permanent Results With Proven Efficacy

Learn why a 24-month study is vital to verify permanent hair reduction and distinguish it from temporary growth delay in Nd:YAG laser treatments.

What Are The Technical Advantages Of Using Industrial-Grade 1064 Nm Nd:yag Laser Equipment? Superior Safety For Dark Skin

Discover why the 1064 nm Nd:YAG laser is the gold standard for deep hair follicle penetration and safe hair removal on darker skin tones.

How Does The Selection Of The Laser Handpiece Spot Size Influence The Efficacy Of Hair Removal Treatments? Maximize Depth

Learn how laser spot size affects penetration depth, clinical efficiency, and treatment outcomes for professional hair removal results.

Why Are Long-Pulse Nd:yag Laser Systems Suitable For Dark Skin? Safe 1064Nm Hair Removal For Fitzpatrick Iv-Vi

Learn how the 1064nm wavelength and long pulse durations of Nd:YAG lasers provide safe, effective hair removal for Fitzpatrick skin types IV to VI.

Why Is It Necessary To Adjust The Laser Pulse Width To A Longer Duration For Coarse Hair? Optimize Hair Removal Results

Learn why coarse hair requires longer pulse widths (30ms) for effective laser hair removal based on Thermal Relaxation Time (TRT) principles.

What Is The Role Of External Closed-Circuit Thermoelectric Chillers? Powering Stable Hair Removal Operations

Learn how thermoelectric chillers stabilize laser diodes, extend equipment lifespan, and ensure patient comfort in laser hair removal systems.

What Should I Look For In An Ipl Machine? Key Features For Effective Hair Removal

Learn how to choose an IPL machine by evaluating lifespan, power, speed, and treatment heads for your hair removal needs.

Why Must Hair Be Shaved To Less Than 1Mm Before Nd:yag Laser Removal? Key Safety & Efficacy Protocols

Learn why shaving to 1mm is vital for Nd:YAG laser hair removal to prevent surface burns and ensure energy reaches the follicle root effectively.

How Can Diode Laser Parameters Be Optimized For Patients With Darker Fitzpatrick Skin Types? Expert Safety Protocols

Learn to optimize Diode Laser settings for Fitzpatrick IV-VI: extend pulse widths, enhance cooling, and adjust fluence for safe, effective results.

What Are The Core Technical Advantages Of Using A Long-Pulse Nd:yag Laser System For Hair Removal On Dark Skin?

Discover why the 1064nm Nd:YAG laser is the gold standard for safe, effective hair removal on Fitzpatrick skin types IV-VI.

How Should Laser Equipment Parameters Be Adjusted For Vellus Vs Terminal Hair? Optimize Treatment For All Hair Types

Learn how to adjust pulse width and fluence for fine vellus and coarse terminal hair to maximize laser hair removal efficacy and safety.

What Role Does The Laser Hair Removal Treatment Head Play? Learn Why Thorough Cleaning Is Critical For Safety.

Understand the physical role of laser treatment heads in energy delivery and why disinfection is essential to prevent cross-contamination.

Why Is The Wavelength Of A Medical Laser A Crucial Parameter? Key To Selective Absorption & Precision

Learn how laser wavelength dictates tissue interaction, selective absorption, and clinical success in medical aesthetic procedures.

What Is The Most Common Type Of Q-Switched Laser? Discover The Gold Standard Nd:yag For Precision Treatments

Learn why the actively Q-switched Nd:YAG bulk laser is the industry standard, offering high peak power and nanosecond precision for clinics.

How Does Hifu Treatment Aid In Reducing Wrinkles? Unlock Youthful Skin With Deep Collagen Regeneration

Learn how HIFU uses focused ultrasound to stimulate natural collagen, fill wrinkle depressions, and tighten skin without surgery or downtime.

Why Should Areas With Birthmarks (Nevus) Be Avoided During Shr Treatment? Critical Safety Tips For Laser Hair Removal

Learn why birthmarks (nevus) must be avoided during SHR treatment to prevent heat accumulation, tissue damage, and ensure patient safety.

What Is The Primary Function Of Professional-Grade Medical Laser Systems? Expert Hirsutism Treatment Solutions

Learn how medical lasers use selective photothermolysis to treat hirsutism, reduce hair density, and improve patient quality of life.

How Does Low-Level Laser Therapy (Lllt) Equipment Assist In The Treatment Of Male Androgenetic Alopecia? Boost Regrowth

Learn how LLLT equipment revitalizes hair follicles via photobiomodulation to treat male androgenetic alopecia and improve hair density effectively.

How Does Super-Long Pulse Duration Technology Contribute To Selective Photothermolysis? Enhance Hair Removal Safety

Learn how super-long pulse durations (5ms-400ms) protect the skin while effectively destroying hair follicles through selective photothermolysis.

What Technical Principles Do Lllt Devices Utilize For Hair Growth? Understanding Photobiomodulation & Atp Stimulation

Learn how Low-Level Laser Therapy (LLLT) uses photobiomodulation and ATP production to stimulate hair follicles and treat androgenetic alopecia.

How Does The Colorimetric Scale Assist In Risk Management? Enhancing Nd:yag Safety For Dark Skin Hair Removal

Learn how colorimetric scales provide objective data for Nd:YAG laser settings, ensuring safe and effective hair removal for dark skin tones.

What Is The Function Of Sapphire Cooling Probes In Nd:yag Laser? Unlock Safety And Efficiency In Laser Hair Removal

Learn how sapphire cooling probes protect the skin and enable higher fluence for effective Nd:YAG laser hair removal treatments.

Who Should Not Use Ipl? Key Contraindications For Safe Skin Treatment

Discover who should avoid IPL treatment, including dark skin tones, pregnancy, specific medications, and skin conditions to prevent burns and scarring.

What Are The Typical Optical Density (Od) Requirements For Laser Hair Removal? Ensure Safety With Od 4+ Eyewear

Learn why an OD rating of 4 or higher is the essential safety standard for laser hair removal to prevent permanent eye injury and retinal damage.

How Does The Application Logic Of The Long-Pulse Alexandrite Laser Differ From The Long-Pulse Nd:yag Laser? Selection Guide

Understand the differences between Alexandrite (755nm) and Nd:YAG (1064nm) lasers for hair removal, focusing on skin safety and wavelength logic.

What Is The Primary Mechanism Of Action For The 755 Nm Long-Pulse Alexandrite Laser? Selective Photothermolysis Explained

Learn how the 755nm Alexandrite Laser uses selective photothermolysis and melanin absorption for precise, long-term eyebrow hair removal.

What Key Role Does A -4°C Cooling Head Play In Diode Lasers? Enhance Patient Safety And Treatment Power

Learn how integrated -4°C cooling heads protect the epidermis, reduce pain, and enable higher energy fluences for superior diode laser hair removal.

What Role Do Coupling Gels Or Skin Protectants Play In Laser Hair Removal? Enhance Safety And Energy Efficiency

Learn how coupling gels act as thermal buffers and optical bridges to prevent burns and maximize laser energy penetration in hair removal.

Why Is The 1064 Nm Wavelength Specifically Used For Q-Switched Nd:yag Laser Hair Removal? Deep Safety & Penetration

Learn why the 1064nm wavelength is the gold standard for safe, deep-penetrating laser hair removal, especially for dark skin and coarse hair.

What Is The Clinical Role Of The 755Nm Alexandrite Laser In Treating Hirsutism? Professional Permanent Hair Reduction

Learn how the 755nm Alexandrite laser uses selective photothermolysis to effectively treat Hirsutism through high-energy hair follicle destruction.

What Are The Technical Characteristics Of The Alexandrite Pulsed Laser For Bikini Hair Removal? Precision 755Nm Tech

Learn how the 755nm Alexandrite Laser uses selective photothermolysis for high-efficacy bikini hair removal on light skin and dark hair.

Why Use Millisecond Pulse Widths For Laser Hair Removal? Optimize Thermal Relaxation For Superior Results

Learn why millisecond pulses are superior for laser hair removal, focusing on selective photothermolysis and protecting the skin from thermal damage.

What Is The Technical Significance Of Selecting A Large Spot Size? Maximize Depth In Nd:yag Laser Hair Removal

Understand how large spot sizes in 1,064 nm Nd:YAG lasers improve penetration depth, reduce scattering, and treat deep hair follicles effectively.

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.

Why Is The Long-Pulsed Nd:yag 1064-Nm Laser Considered A Safer Option For Dark Skin? Discover The Gold Standard Physics

Learn how the Nd:YAG 1064-nm laser bypasses epidermal melanin to provide safe, effective hair removal for Fitzpatrick skin types IV-VI.

How Does The Combined Use Of Topical Eflornithine And Laser Hair Removal Devices Improve The Treatment Of Hypertrichosis?

Discover how combining topical eflornithine with laser therapy accelerates hair reduction through biochemical inhibition and photothermal destruction.

What Is The Function Of Nd:yag Laser Systems In Hair Removal? The Safe Choice For Dark Skin Tones

Learn how the Nd:YAG 1064nm wavelength ensures safe, effective hair removal for dark skin by targeting follicles while protecting the epidermis.

What Are The Advantages Of Long-Pulsed Nd:yag Laser Hair Removal? Achieve Permanent Follicle Atrophy Over Shaving

Explore why Long-pulsed Nd:YAG lasers outperform mechanical hair removal by targeting follicles directly to prevent regrowth and skin trauma.

How Does The Laser Spot Size Influence The Treatment Depth? Optimize Your Hair Removal Results

Learn how laser spot size affects energy penetration and scattering to ensure effective, deep-root hair removal in clinical treatments.

Why Is The Long-Pulse Nd:yag 1,064 Nm Laser System Preferred For Hair Removal Across Various Fitzpatrick Skin Types?

Learn why the long-pulse Nd:YAG 1064nm laser is the gold standard for safe hair removal on Fitzpatrick skin types IV-VI and deep tissue penetration.

Why Am I Not Seeing Results With Ipl? Unlock The Science Behind Effective Treatment

Discover why your IPL treatments may fail due to low energy settings, poor color contrast, or inconsistent scheduling. Learn how to achieve real results.

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 Are The Specific Functions Of An Integrated Cooling Tip? Elevate Patient Safety & Results In Laser Hair Removal

Learn how integrated sapphire cooling tips protect the skin, reduce pain, and allow higher energy for effective diode laser hair removal results.

What Is The Downside Of Ipl? Key Limitations And Risks For Skin Of Color

Learn the primary downsides of IPL, including risks for darker skin tones, potential side effects like burns, and limitations on effectiveness.

How Does The 1540 Nm Laser Wavelength Contribute To Reducing Side Effects? Enhance Safety In Dual-Wavelength Treatments

Learn how the 1540 nm non-ablative laser reduces downtime, minimizes erythema, and preserves epidermal integrity in dual-wavelength skin treatments.

How Does A Super-Pulsed Laser Lipolysis Machine Work? Advanced Thermal Liquefaction For Fat Reduction

Learn how super-pulsed laser lipolysis uses high-intensity thermal energy to liquefy fat cells and stimulate skin tightening for superior results.

How Does Laser Hair Restoration Therapy Work? Unlock Hair Growth With Advanced Low-Level Light Technology

Learn how laser therapy stimulates scalp circulation, repairs follicles, and triggers the hair growth phase for thicker, healthier hair.

What Are The Applications For Laser Heads With 532Nm, 755Nm, And 1064Nm Wavelengths? Expert Guide To Aesthetic Precision

Master laser wavelength applications: 532nm for correction, 755nm for light skin hair removal, and 1064nm for dark skin safety and deep tattoos.

Why Is The 1064 Nm Nd:yag Laser Preferred For Hair Removal In Dark Skin? Safe & Effective Deep Follicle Targeting

Learn why 1064 nm Nd:YAG lasers are the gold standard for safe hair removal on Fitzpatrick IV-VI skin, bypassing melanin to prevent burns.

Why Is The Integration Of External Skin Cooling Devices Essential During Nd:yag Laser Hair Removal Procedures?

Discover why external cooling is vital for Nd:YAG laser hair removal to prevent burns, manage pain, and enable higher fluence for better results.

How Does Bipolar Rf With Light Energy Treat Fine Hair? Unlock Effective Removal For Light-Colored Hair

Learn how combining Bipolar RF and light energy overcomes melanin limitations to effectively treat fine, blonde, and red hair types.