The term "100% nicotine liquid" suggests a solution of pure nicotine without any dilution or added ingredients. Such a product would be extremely potent and potentially hazardous due to the high concentration of nicotine. In most cases, nicotine liquid for vaping or other purposes is diluted with other substances such as propylene glycol (PG) and/or vegetable glycerin (VG) to achieve the desired nicotine strength and consistency. Using undiluted 100% nicotine liquid without proper knowledge and precautions can pose serious health risks. It's important to handle nicotine products responsibly and follow safety guidelines at all times.