1. Ga kuraje mara kyau, ichthyosis da psoriasis mara kyau
2. Magungunan keratosis.
3. Wanda kuma aka sani da retinoic acid da retinoic acid, wannan nau'in shine samfurin matsakaici na bitamin A a cikin jiki, wanda ya fi tasiri ga ci gaban kashi da kuma metabolism na kwayoyin epithelial, kuma yana da tasirin inganta yaduwar kwayar halitta da keratolysis. .