Your comment about shaving foam intrigued me as it is something I have never heard of being a problem with diabetes.
I had to google it "shaving foam diabetes".
And ...
I am still intrigued; I got no hits.
Nothing about the foam and the only shaving and diabetes hit explained:
Warnings about beauty treatments, including waxing, laser hair removal treatments and massage – or any treatment involving heat – are given as a general precaution to people with diabetes.
The reason for this is partly related to the complication known as
neuropathy (nerve damage), which can lead to a lack of feeling, usually in the feet and legs, although it can occur in other body parts too. As a result of this, a person may not be aware that something is burning them until the damage is done.
These products carry a health warning so they are covered in case of legal claims against them, but there is also a need to warn people who may be vulnerable. Always ask your diabetes nurse or doctor if you are in any doubt.
So, nothing that will change my shaving habits.
(Sorry for the tangential addition.)