This will be the name that appears next to your comments and reviews. You can change it later via the settings button in the top right where you can also add a profile picture and amend your other account info at any time.
Propylene glycol is a synthetic compound that absorbs water and can therefore be used to keep semi-moist dog foods and treats semi-moist. It also has anti-bacterial and anti-fungal properties making it suitable as a preservative.
Although propylene glycol has been approved as safe for both humans and dogs (but not cats due to its links to the feline condition Heinz body anaemia), it remains a source of controversy. This is partly due to regular links to asthma and allergic reactions and partly because propylene glycol's other commercial uses (including car antifreeze and in de-icing aircraft) don't inspire too much confidence in dog owners.