Urea isn’t the sexiest skin care ingredient out there — it’s been a mainstay in body lotions and foot creams for years — but recently, it’s blown up on social media. If you have rough ...

Formaldehyde is a known carcinogen and can be found in some cosmetics, either directly or as a byproduct of other preservatives like quaterinums and imidazolidinyl urea. The International Agency ...