The adhesive manufacturer who I have been using has said the same he said that basically glue is glue and all the spiel or hype about Italian keratin and keratin does not exist. I have rang a few companies and got samples of adhesive and they all seem the same as I use a polyamide.
This is why I started this thread to see what peoples opinions are on this subject,
When you think a about the words keratin, Italian keratin, wax, they all sound I suppose better and kinder than good old glue and at the end of the day this is what it is glue!