Thermochromic inks react to changes in temperature by exhibiting a colour change.
Photochromic inks change colour when exposed to ultraviolet light usually from the sun or a UV light.
Chameleon® Hydrochromic Inks & Coatings react to the presence of water. We make Reversible and Irreversible Hydrochromic Inks.
Liquid crystal inks
Liquid Crystal inks are highly responsive to temperature change, quickly changing colour reversibly as they are warmed or cooled.
Specialist Masterbatches include Thermochromic, Photochromic & Glow in the dark
Flash Ink reversibly changes upon exposure to a beam of direct white light, becoming bright white. It disappears instantly the light source is removed.