SFXC® Knowledge Base
Welcome to the SFXC® Knowledge Base — a growing resource for understanding colour-changing materials, how they work, and how to choose the right solution for your creative, industrial or technical application.
This section brings together practical guides, material overviews and technical resources covering thermochromic, photochromic, hydrochromic and liquid crystal technologies across print, coatings, film and pigment formats.
Start here
New to SFXC® colour-changing materials? Begin with the overview articles below, then explore the specific thermochromic, photochromic, hydrochromic and liquid crystal sections.
Start Here
How Octopuses Change Colour
Nature's most sophisticated colour-changers — and what their biology reveals about the science behind colour-changing materials.
Read article →The Story of Liquid Crystals
The accidental discovery that changed how we see the world — and laid the foundation for modern colour-changing technology.
Read article →The Magic Behind Colour Changing Paint
An accessible introduction to how thermochromic paints and coatings work, and where they're used.
Read article →Thermochromic Materials
Thermochromic inks, pigments, paints and coatings change colour in response to temperature. Explore guides covering how they work, how to use them, and which format suits your application.
Colour Changing Paint
How thermochromic paints and coatings work, and the range of creative and industrial applications they support.
Read article →Thermochromic Inks
Guide coming soon.
Thermochromic Pigments
Guide coming soon.
Photochromic Materials
Photochromic materials change colour in response to UV light — activating outdoors and fading back indoors. Used in inks, pigments, coatings and consumer products.
Photochromic Glasses & Transition Lenses
How photochromic technology works in prescription lenses — a clear real-world example of UV-reactive colour change.
Read article →Photochromic Inks & Pigments
Guide coming soon.
Hydrochromic Materials
Hydrochromic materials reveal hidden colours or images when exposed to water or moisture — used in films, coatings, promotional products and packaging.
Moisture Reactive Hydrochromic Film
A guide to how hydrochromic film works, its formats, and the applications it's best suited to.
Read article →Hydrochromic Umbrellas
A fun and practical example of hydrochromic technology in consumer products — colour that appears only in the rain.
Read article →Hydrochromic Inks & Coatings
Guide coming soon.
Liquid Crystal Materials
Liquid crystal materials produce vivid, iridescent colour shifts across a temperature range — used in thermometers, novelty products, security printing and specialist coatings.
The Story of Liquid Crystals
The history and science of liquid crystals — from accidental discovery to widespread use in colour-changing applications.
Read article →Liquid Crystal Films & Sheets
Guide coming soon.
Technical Resources
Supporting documents, datasheets and technical references for SFXC® colour-changing materials. This section will grow as the documentation library expands.
Thermochromic Documents
Add ink, pigment and coating datasheets, application notes and safety data sheets here.
Photochromic Documents
Add photochromic pigment and ink technical references and application guides here.
Hydrochromic & Liquid Crystal Documents
Add film, coating and liquid crystal material datasheets and technical notes here.
Explore SFXC® products
Browse the full SFXC® section on ColourChanging.co.uk for products, collections and further information.