Keep in an airtight container for up to a week.
While grapes may be poisonous to your pup, grapeseed oil is safe and packed with antioxidants. It is also relatively flavorless with a high smoke point. You can also substitute coconut oil if you prefer.
A pinch of cinnamon is super anti-inflammatory in moderation but be cautious. If your pup has a super sensitive mouth it could irritate it.