A bacta patch is a poor substitute for a full tank session, but can be a welcome relief when used in the field. To use, the patch must first be twisted several times to break the interior seals and release the bacta. Then the backing must be removed to expose the adhesive. Once applied, the patch seals the wound and time releases bacta into the area. Bacta is absorbed through the skin of the patient, producing a topical healing effect.

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