... Pad Also known as: cold hot pack, gel pad, gel pack, compress pack, microwavable hot cold pack, ... . Approximately 1 hour is required to freeze gel. IDEAL FOR:Reducing swellingToothacheTemporary relief of headacheReducing ... or 1 minute (if the gel pack is frozen) on high power. After this time, check that the ... heat, and immerse the gel pack for approximately 4-10 minutes. After 4 minutes, check every 1 ...