News

Hair repair, bond building and color care insights from QAI Hair.

Woman applying heat protectant before flat ironing
best heat protection treatment en

Best Heat Protection Treatment: A Stylist's Comparison

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Stylist rinses hair beside mineral-scaled faucet
best chelating treatment en

Best Chelating Treatment for Salons: How to Choose in 2026

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Porous blonde hair at a salon rinse basin
bleach and tone damage repair en

Bleach and Tone Damage Repair: What Works and What Doesn't

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Damaged and intact hair tresses side by side
cortex hair repair en

Cortex Hair Repair: What Works and How Options Compare

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Educator inspecting a hair treatment label
en formaldehyde-free keratin

Formaldehyde-Free Keratin: What the Label Really Means

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Woman examining rough, highlighted hair ends
en heat damage vs chemical damage

Heat Damage vs Chemical Damage: How to Tell Them Apart

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Heat tool moving through a section of hair
en heat-activated hair repair

Heat Activated Repair: Covalent Grafting, Not Just Smoothing

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QAI masque beside a vibrant dyed hair swatch
color vibrancy booster en

Color Vibrancy Boosters: Choose a Masque Before More Pigment

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Bleached hair shaft cross-section under magnification
disulfide bond repair en

Disulfide Bond Repair: 3 Routes, One Damage Chemistry Cannot Undo

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Woman applying repair treatment to damp hair
best breakage treatment en

Hair Breakage Treatment Starts With Bond Repair, Not Surface Smoothing

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Stylist treating bleached hair with QAI grafting care
best bond builder for bleach en

Bond Builders for Bleached Hair: Covalent Grafting Beats Coating

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Stylist applying a treatment to color-treated hair
en porosity equalizing treatment

Porosity Equalizing for Salon Pros: Why Covalent Repair Lasts

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Stylist flat-ironing hair at salon station
en glyoxylic acid smoothing

Glyoxylic Acid Smoothing: Kidney Risks and a Repair First Alternative

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Stylist assesses chemically damaged hair lengths
en top damage repair brands

Science Backed Damage Repair Brands: Structural Results in 4–6 Weeks

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Stylist testing hair porosity before bleaching
en pre-bleach treatment

Science First Pre-Bleach Treatment for Stylists: Match Tests to Timing

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Woman gently detangling damaged bleached hair
en repair chemical overprocessing

Peptide Grafting Repairs Chemical Overprocessing in 2–8 Weeks

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Stylist testing fragile colored hair strand
en toner not sticking

Stylists: Five Minute Fix When Toner Won't Stick, Repair First

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Stylist examining damaged hair before repair treatment
brazilian blowout alternatives en

Avoid Formaldehyde: Repair First Alternatives to Brazilian Blowout

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Stylist applying treatment to colored hair
color lock treatment en

Stop 60% of Color Fade: Science First Color Lock Treatment Routine

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Stylist applying treatment to damaged hair
best bond builders en

Science First Bond Builders: PolyGraft-9 Rebuilds Hair, Not Coats It

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Stylist examining damaged hair texture
biomimetic hair repair en

44% Tensile Gain: Biomimetic Hair Repair Science, QAI Tech, and Routine

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Stylist rinsing acidic treatment from client’s hair
acid treatments for hair en

3 Acid Chemistries for Hair: What Science Shows, What Risks Remain

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Stylist assessing damaged color-treated hair
en olaplex alternatives

Stop Wasting Money on Olaplex Alternatives: Pick by Damage, Not Brand

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Stylist sectioning damp hair for smoothing
en keratin repair treatment

Smooth Frizz, Not Bonds: When Keratin Repair Treatment Helps

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Stylist assessing damaged hair before treatment
en k18 alternatives

Match Treatment to Damage: K18 Alternatives and QAI PolyGraft-9

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Color-treated hair exposed to bright sunlight
en UV hair color fading

Stop UV Hair Color Fading After One Weekend With This Routine

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Smooth for months: glyoxylic acid hair treatment risks and repair
en glyoxylic acid hair treatment

Smooth for months: glyoxylic acid hair treatment risks and repair

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Stylist comparing damaged hair sections
en Redken alternatives

4 Redken Alternatives That Repair Hair, Plus One PolyGraft-9 Option

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Stylist applying repair treatment to damp hair
best hair repair en

Best Hair Repair: Covalent Bonding Rebuilds Strands Instantly

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Stylist smoothing conditioned hair strands
en seal hair cuticle

4 Step Routine to Seal the Hair Cuticle, With Covalent Repair Option

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Stylist performing hair porosity water float test
en low porosity vs high porosity hair

Two Week Porosity Routine: Test and Treat Low vs High Porosity Hair

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Stylist applying hair treatment in salon
covalent polypeptide technology en

Covalent Polypeptide Technology: How It Repairs Hair for Good

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Stylist applying hair repair treatment in salon
en protein overload hair

Protein Overload Hair Repair: Covalent Grafting Explained

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Person applying hair mask at home bathroom
en home hair repair treatment

The Right Home Hair Repair Treatment for Your Damage Type

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Hands stretching wet hair strand in salon
en hair elasticity test

The Hair Elasticity Test: How to Check and Fix Bounce

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Stylist stretching hair strand to test elasticity
en restore hair elasticity

Restore Hair Elasticity: Diagnose, Treat, Stop Breakage

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Stylist applying polypeptide treatment to hair strand
en First Covalent Grafting Polypeptide

QAI Hair Launches the First Covalent Grafting Polypeptide

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Close-up of hair strand being sprayed with water
en hair porosity test

How to Do a Hair Porosity Test That Actually Works

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Flat iron smoothing keratin treated hair in salon
en keratin treatment side effects

Keratin Treatment Side Effects: What You Need to Know

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