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Colorimetry Blog

Techniques, color theory, and tips for professional colorists

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Professional color wheel with hair swatches showing different color levels

Guide colorimetry

Hair Colorimetry Basics: Guide for Colorists

Master the fundamentals of hair colorimetry: color theory, levels, underlying pigments, and neutrali...

Professional colorist applying balayage technique with brush in modern salon

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Hair Coloring Techniques Guide

Master balayage, highlights, foilyage, babylights and more. Lightening techniques explained step by ...

Collage of 2026 hair color trends showing blondes, brunettes and coppers

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Hair Color Trends 2026: Full Guide

Hair color trends 2026: butter blondes, rich brunettes, vibrant coppers and fantasy colors. How to a...

Modern professional hair color salon with organized workstation and products

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Hair Color Business: How to Build a Profitable Salon

Professional guide to building a profitable hair color salon. Pricing, client retention, formula man...

Latest Articles

Glazed pecan brunette hair showing warm tonal layers and gloss finish under natural light

techniques

Glazed pecan brunette: professional formula step by step

Learn how to formulate the glazed pecan brunette, the trending brunette of 2026. Formula by level, tonal layering techni...

Updated: Mar 5, 2026 Read more →

Hair with color melting transition showing seamless gradient between tones under warm professional lighting

techniques

Color Melting Technique: Step-by-Step for Seamless Transitions

Learn the color melting technique step-by-step with professional formulas by level. Seamless transitions your clients wi...

Updated: Mar 1, 2026 Read more →

Professional colorist applying halo highlights with weaving technique around the face

techniques

Halo Highlights: Face-Framing Highlights That Glow

Learn the halo highlights technique step by step. Strategic face-framing highlights that create natural luminosity with ...

Updated: Mar 1, 2026 Read more →

Hair fibers with visible metallic deposits under warm professional lighting

techniques

Metals in Hair: The Invisible Enemy of Bleaching

Discover how hard water metals ruin your bleaching results. Professional protocol for detecting and neutralizing metals ...

Updated: Mar 1, 2026 Read more →

Hair with Quiet Silver technique showing natural transition between grey and pigmented color

colorimetry

Quiet Silver: How to Integrate Grey Hair with Elegance

Quiet Silver integrates grey hair without covering it. Learn the step-by-step formulation, processing times, and the 3 m...

Updated: Feb 25, 2026 Read more →

Professional colorist applying blue ash toner to orange hair after bleaching, showing before and after toning result

colorimetry

Blue Toner for Orange Hair: The Pro Guide

Purple toner does nothing on orange hair. Learn why blue neutralizes orange, which professional products to use, and exa...

Updated: Feb 24, 2026 Read more →

Hair swatch showing color fading progression over several weeks

techniques

How Long Does Hair Color Last (and How to Make It Last Longer)

Find out how long each type of hair dye lasts and the 6 factors that fade color fastest. Free calculator and professiona...

Updated: Feb 24, 2026 Read more →

Professional colorist applying toner to bleached blonde hair in a salon, with mixing bowls and toning products on the workstation

colorimetry

Toner for Blonde Hair: Professional Guide

The complete professional guide to toner for blonde hair: types, developer volumes, application technique, and formulas ...

Updated: Feb 24, 2026 Read more →

Professional colorist examining unwanted gray toner result on bleached blonde hair in salon setting

colorimetry

Why Did My Toner Not Work? 8 Common Mistakes

Why did my toner not work? Turned gray, purple, or washed out in 2 days? The 8 most common toner mistakes, their exact c...

Updated: Feb 24, 2026 Read more →

Professional colorist applying ash toner to brassy blonde hair in a salon, demonstrating the neutralization process at each level

colorimetry

Toner for Brassy Hair: Complete Pro Guide

The best toner for brassy hair depends on the type of brass. Learn which toner family works for orange, yellow-orange, w...

Updated: Feb 24, 2026 Read more →

Professional colorist applying toner to freshly bleached hair in a salon, achieving cool ash blonde result without brassiness

colorimetry

Toner on Bleached Hair: The Complete Guide

How to choose and apply toner on bleached hair. Read the undertone, pick the right toner family, developer volume, timin...

Updated: Feb 24, 2026 Read more →

Microscopic comparison of hair cuticles showing low, medium, and high porosity

colorimetry

Hair Porosity and Coloring: Professional Guide

Learn how to assess hair porosity and adapt your formulation. Quick tests, timing adjustments, and color tips by porosit...

Updated: Feb 23, 2026 Read more →

Dark brown hair with vibrant copper highlights under natural light in a professional salon

trends

How to Achieve Copper Hair on a Dark Base: Professional Guide

Achieve vibrant copper tones on dark hair. Formulas by starting level, application technique, and mistakes that ruin the...

Updated: Feb 19, 2026 Read more →

Professional hair color tubes in copper tones with color swatches on salon background

trends

Copper Hair Formulas 2026: From Dark Copper to Ginger

Detailed copper hair formulas by brand (Wella, Schwarzkopf, L'Oréal) and starting level. Application techniques and corr...

Updated: Feb 18, 2026 Read more →

Vibrant ginger copper hair showing shine and dimension under natural light

trends

Ginger Glow: The Copper Trend of 2026 and How to Achieve It

Ginger copper dominates 2026. Professional formulas, variants (spicy, subtle, dark ginger) and step-by-step technique to...

Updated: Feb 16, 2026 Read more →

Redken Shades EQ tubes alongside Schwarzkopf Igora Vibrance with conversion chart

colorimetry

Redken to Schwarzkopf Conversion Guide

Complete conversion chart from Redken Shades EQ to Schwarzkopf Igora Vibrance. Shade-by-shade equivalences, technical di...

Updated: Feb 13, 2026 Read more →

Professional hair color products from different brands organized at a salon workstation

colorimetry

How to Switch Hair Color Brands: Pro Guide

Step-by-step guide to switching hair color brands. 7-brand comparison matrix, transition process, and conversion tools f...

Updated: Feb 13, 2026 Read more →

Professional colorist using a hair color formulation app on a tablet

product

Best Apps for Professional Hair Colorists in 2026

The best hair colorist apps of 2026 compared. Features, pricing, and which one to choose based on your workflow as a pro...

Updated: Feb 12, 2026 Read more →

Calculator and price list at a professional hair color salon workstation

business

Hair Color Pricing: What to Charge

Complete pricing table for hair color services, formula to calculate your rate, and strategies to raise prices without l...

Updated: Feb 11, 2026 Read more →

Professional colorist organizing formula records on tablet alongside hair color products

business

Hair Color Formula Management: Organize Your Salon

How to store and organize your professional hair color formulas. Notebook vs spreadsheet vs app comparison and digital m...

Updated: Feb 11, 2026 Read more →

Professional colorist in personalized consultation with client reviewing color swatches

business

Salon Client Retention: 7 Strategies

7 proven salon client retention strategies for hair colorists. Maintenance programs, personalized consultations, and pos...

Updated: Feb 11, 2026 Read more →

Professional colorist applying long-lasting red formula in modern salon

techniques

Long-Lasting Red Formulas: Anti-Fade

Long lasting red hair formulas that resist fading. Professional techniques: underbasing, sealing glaze, and maintenance ...

Updated: Feb 8, 2026 Read more →

techniques

Ombre vs Sombre: Key Differences

Learn the differences between ombre and sombre, when to use each gradient technique and professional formulas for perfec...

Updated: Feb 8, 2026 Read more →

Professional colorist applying romantic red hair dye for Valentine's Day

techniques

Romantic Red Hair: Perfect Valentine's Tones

Discover the most romantic red hair tones for Valentine's: cherry, burgundy, copper. Professional formulas and technique...

Updated: Feb 8, 2026 Read more →

Multidimensional blonde hair with highlights and lowlights creating depth in professional salon

techniques

Dimensional Blonde: Avoid Flat Hair

Learn how to create multidimensional blondes that shimmer with light and depth. Techniques, formulas, and mistakes to av...

Updated: Feb 6, 2026 Read more →

techniques

Highlights vs Lowlights: Key Differences

Discover the differences between highlights and lowlights, when to use each technique, and how to combine them for perfe...

Updated: Feb 4, 2026 Read more →

Professional colorist applying lowlights with weaving technique to add depth

techniques

Lowlights: Depth and Dimension Guide

Master the lowlights hair technique step by step. Dark highlights that add dimension, break monotony, and create multidi...

Updated: Feb 2, 2026 Read more →

Visual comparison of the 5 grey hair coverage levels: from 100% to natural grey blending

colorimetry

5 Grey Hair Coverage Levels Explained

Discover the 5 grey hair coverage levels (from 0% to 100%) and learn how to choose the right one based on each client's ...

Updated: Jan 28, 2026 Read more →

Professional hair gloss application in salon with shiny result

techniques

Hair Gloss: Professional Technique Guide

Learn what hair gloss is, when to apply it, and the step-by-step technique. Complete guide for professional colorists wi...

Updated: Jan 28, 2026 Read more →

Professional colorist analyzing hair strand for color correction

colorimetry

Color Correction: How to Fix Failed Hair Dye

Professional guide to fixing hair color that didn't turn out right. Techniques, formulas, and protocols for correcting c...

Updated: Jan 25, 2026 Read more →

Hair with Espresso Martini Brunette color showing depth and intense shine

techniques

Espresso Martini Brunette: 2026 Trend Guide

Espresso Martini Brunette: the deep, glossy brown dominating 2026. Learn the technique, formulas, and who this color fla...

Updated: Jan 25, 2026 Read more →

Professional colorist applying bleach using foil technique in modern salon

techniques

Professional Hair Bleaching: Step-by-Step

Learn to bleach hair professionally. Lifting stages, timing, products and techniques for flawless results without compro...

Updated: Jan 19, 2026 Read more →

Professional colorist applying shadow root technique with brush to blend roots

techniques

Shadow Root: How to Create Perfect Blended Roots

Master the shadow root technique step by step. Formulas, application tips and advice to create blended roots that reduce...

Updated: Jan 19, 2026 Read more →

Professional colorist applying ash toner to blonde hair to eliminate orange tones

colorimetry

Cool Blonde Without Orange: Pro Guide

Learn how to achieve perfect cool blonde tones without orange undertones. Diagnosis, professional formulas, and step-by-...

Updated: Jan 18, 2026 Read more →

Professional colorist applying babylights with ultra-fine weaving technique

techniques

Babylights: Ultra-Natural Highlights

Master babylights with this step-by-step guide. Ultra-fine highlights that mimic children's hair. Formulas, technique, a...

Updated: Jan 18, 2026 Read more →

Professional colorist applying foilyage technique with brush and aluminum foil

techniques

Foilyage Step by Step: Pro Formulas

Master foilyage with this step-by-step technical guide. Real formulas, when to use it, and mistakes to avoid. Perfect fo...

Updated: Jan 18, 2026 Read more →

Professional developer bottles in different volumes 10, 20, 30 and 40

colorimetry

Hair Color Developer: Choosing Volumes

The definitive guide to hair color developers. Learn when to use 10, 20, 30, or 40 volume and how it affects your formul...

Updated: Jan 17, 2026 Read more →

Professional colorist applying hair dye for gray coverage in salon

colorimetry

Gray Hair Coverage: Complete Professional Guide

Professional gray hair coverage guide. Cover 100% of grays, even the most resistant, with pre-pigmentation, formulation ...

Updated: Jan 17, 2026 Read more →

Color wheel showing complementary colors for hair tone neutralization

colorimetry

How to neutralize unwanted tones in hair

Master color theory to correct unwanted orange, yellow, and red tones in hair. Practical guide with professional formula...

Updated: Jan 17, 2026 Read more →

Professional hair color level swatch book showing levels 1 to 10

colorimetry

Hair Color Levels: From 1 to 10

Learn to correctly identify natural tone levels and underlying pigments from 1 to 10. The essential foundation for all p...

Updated: Jan 17, 2026 Read more →

Professional colorist weighing hair dye on precision scale in salon

colorimetry

7 Color Formulation Mistakes to Avoid

The 7 most common mistakes even experienced colorists make when formulating hair color. Learn to identify and correct th...

Updated: Jan 17, 2026 Read more →

techniques

Balayage vs Highlights: Key Differences

Understand the differences between balayage, foil highlights, and other lightening techniques. When to use each and how ...

Updated: Jan 17, 2026 Read more →