Saliva can be used as a lubricant, but it may not be the best option for several reasons.

First, saliva is not a long-lasting lubricant, it dries up quickly, and will need to be reapplied frequently. This can be inconvenient during sexual activity.

Second, saliva can contain bacteria and other microorganisms that can cause infections, particularly if it is used to lubricate the genitals.

Third, saliva can also contain enzymes that can irritate the skin and cause burning or itching.

Finally, saliva is not recommended for use with condoms as it can weaken the condom, making it more likely to break or tear.

It’s important to use a lubricant that is specifically designed for sexual activity, such as water-based or silicone-based lubricants, as they are less likely to cause irritation or infection and are safe to use with condoms.

Saliva on the skin is generally considered safe and is not known to cause any significant harm. However, saliva can contain bacteria and other microorganisms that can cause infections if it comes into contact with open wounds or broken skin.

It’s also important to note that saliva can contain enzymes that can irritate the skin and cause burning or itching, especially in people with sensitive skin.