Fillers that are primarily used for the lips are made of hyaluronic acid. This helps in moisturisation and adding volume or augmentation.
There are softer versions of Lip fillers on the market now that aim to primarily provide moisture for the lips.
So yes they can help to keep your lips moist and reduce the side effects of isotretinion, but it might not be a cost effective option as lip fillers tend to be quite costly.
For my patients who do have problems with dry or cracked lips while on isotretinion, I normally would ask them to use a moisturising lip balm or Vaseline cream .
Hope this helps.
Regards
Dr KK Chew
