Jenna’s question…Do you really have to heed the expiration date on antiperspirants and deodorants? Is it dangerous to use any that have expired? The Right Brain replies: If you read 5 Ways That Beauty Products Go Bad, you know that regular cosmetic products (like deodorants) are NOT required to have an expiration date in the US. [...] Read more: Expire or Perspire: When Antiperspirants Go Bad