While it may sound like some manufactured chemical, nitrous oxide is naturally present in the atmosphere as part of the Earth’s nitrogen cycle. It was first discovered by the English chemist Joseph Priestley in 1772 and quickly became known for its anesthetic effects. You may have heard of it as “laughing gas.”
Similar to oxygen, nitrous oxide is dissolved and absorbed in the liquid portion of the gel. A portion of the visible micro-bubbles also contains this gas. Nitrous oxide is believed to be a topical analgesic that relieves pain.
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