Can using a barber's razor that causes bleeding transmit HIV?
Generally speaking, whether getting a cut from a barber's razor can transmit HIV depends on the hygiene condition of the razor. In正规 barber shops using properly disinfected razors, transmission is unlikely; however, in unlicensed or informal barber shops where razors are not sterilized or have been used by infected individuals, there may be a risk of transmission. The detailed analysis is as follows:

Reputable barber shops typically use disposable razors or strictly disinfect reusable ones through high-temperature treatment or soaking in disinfectants. HIV has weak survival ability outside the human body, and these disinfection methods can completely eliminate the virus. Therefore, even if bleeding occurs during shaving, transmission will not occur, so there is no need for excessive concern.
In unlicensed barber shops, if razors are shared without proper disinfection and were previously used by an HIV carrier, the virus might remain on the blade. If the razor then cuts the skin, the virus could enter the body through the wound, increasing the risk of transmission. In such cases, the wound should be immediately rinsed thoroughly under running water and disinfected with iodine tincture.
When getting a haircut, it is advisable to choose正规 establishments and proactively confirm whether the razors are properly sterilized or request the use of disposable razors. If accidentally cut by a razor of unknown origin, in addition to prompt wound care, individuals should seek professional guidance for further risk assessment and possible interventions.