user image

Samantha Blues

Colour Science Investigation

CSI Colour Emergency Guide – Hair Colour First Aid

CSI Colour Emergency Guide – Hair Colour First Aid

Let’s be honest.

Every student hairdresser has had that moment behind the chair when colour doesn’t go the way you expected.

The toner goes muddy.
The blonde turns orange.
The roots go hot.

And suddenly everyone in the salon is staring at the bowl wondering what to do next.

That’s exactly why I created this guide.

The CSI Colour Emergency Guide is a practical, easy-to-understand survival guide designed specifically for Year 1 and Year 2 hairdressing students who want to stop guessing and start understanding how colour actually works.

Inside this guide you’ll learn the core principles professional colourists use to diagnose and fix colour problems with confidence.


Inside This Guide

• The Hair Level Ladder – understand exactly how light or dark the hair really is
• The Underlying Pigment Chart – know why hair turns red, orange or yellow
• The Colour Wheel Neutralising System – what cancels brassiness instantly
• The 5 Most Common Colour Emergencies and how to fix them
• The Salon Colour Diagnosis Flowchart used by colourists
• 7 Colour Mistakes Student Hairdressers Make (and how to avoid them)
• A Salon Colour Cheat Sheet you can screenshot and keep behind the chair


Why This Matters

Hair colour rarely fails because a stylist is bad.

It fails because nobody explained the science behind the decisions.

Once you understand how colour behaves, everything becomes easier.

You stop guessing.

You start investigating.


Who This Guide Is For

This guide is perfect for:

• Year 1 hairdressing students
• Year 2 hairdressing students
• apprentices starting colour services
• stylists who want more confidence with formulation


About Samantha Blues

I’ve spent over 30 years behind the chair and teaching colour science to hairdressers across the UK.

My mission is simple:

Help hairdressers stop guessing with colour and start thinking like Colour Investigators.

That’s the foundation of the CSI Method – Colour Science Investigation.


Download Your Guide

Click Download and start learning the colour thinking system that will give you more confidence behind the chair.

Because great colourists don’t guess.

They investigate.


Get My FREE Guide