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  • Changes from color to no color when wet
  • Exposes images and texts when product gets wet
  • Reversible or irreversible options
  • SpotSee has the ability to find the correct fit for the customer’s project

Hydrochromic Ink

Thermostar Hydrochromic Ink is available as Irreversible or Reversible. There are two types of Irreversible Hydrochromic Ink. The first changes from a color to clear (or white, if printed onto white substrate) when exposed to water and remains so when dry again. The second dissolves and washes off the surface, revealing a message below. The Reversible Ink is white in appearance but becomes translucent when exposed to water and reverts to a white state when dry.
These inks can be featured in a variety of applications revealing that a product has been exposed to water. For example, high-end promotional items, game cards, labels, and packaging.


  • Irreversible: Blue and Black
  • Reversible: White


  • Water Based Wet & Reveal – Reversible
  • Solvent Based Wet & Reveal – Reversible
  • Wash & Win – Irreversible
  • Solvent Based Flexo

Hydrochromic Ink Applications

  • Promotional Items
  • Labels
  • Packaging
  • Toys
  • Diagnostic Testing
  • Coupons
  • Mailers
  • Giveaways
  • Exposure to water indication for the warranty market

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