Does the Firefly adhesive contain colophony, rosin, or any resin-based ingredients?

No, there are no resin-based ingredients (including colophony or rosin) in the adhesive.

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Why does the firefly lose adhesion after a few uses? Is Firefly similar to other recovery technologies? How does Firefly differ from muscle stim? Can I wear the Firefly device in the shower, ice bath or pool? How should I store or transport the Firefly devices?