Use of hand sanitisers that contain ethyl alcohol (ethanol) can result in a detectable but insignificant absorption into the body.
In the UK, the hand sanitiser alternative to ethanol is isopropyl alcohol ( aka propan-2-ol ). This is also known as rubbing alcohol in the USA. This alcohol cannot usually be detected within the human body following skin application as absorption is virtually nil through the skin.
The link provided above refers to hand sanitiser gel containing propan-1-ol ( aka propyl alcohol or n-propanol). This alcohol differs in its efficacy against pathogens from the two mentioned above and to be honest, it's pretty rare to find propan-1-ol as the alcohol in UK hand sanitisers for a number of reasons.
Don't forget that any high alcohol product can cause drying of skin and/or irritation to those with sensitive skin especially those with eczema and similar conditions. People with cuts on their hands should avoid them as the high alcohol content stings like the devil.
PHE still advises the use of soap and water in preference to alcohol sanitisers, but they do have their place when there's nothing else around.