The information provided through TheBody should not be Is cum lubricant for diagnosing or treating a health problem or a disease. Being water-based, Cum Lube can be safely used with any type of material, including silicone. HIV's fragility when exposed to the Is cum lubricant can be one explanation for the low-risk nature of this activity. In some of my responses about mutual masturbation, I recommend that people do not use another person's fluids semen, vaginal secretions, or fluids containing blood for masturbation saliva is not included in this list because it is not implicated in transmission. Cum Lube really does look like semen. This means that transmission of HIV through masturbation with another person's fluids would be an unlikely occurrence.