72mg nicotine is an extremely high concentration of nicotine typically found in nicotine base liquids used for DIY e-liquid mixing. It is not intended for direct vaping due to its potency and is usually diluted to create lower-strength vape juices. Handling this concentration requires caution, protective gear, and proper storage to ensure safety. https://mistervape.co.uk/collections/72mg-freebase-nicotine