... intestines absorb is better 1.treatment of invalid severe acne 2.treatment of acne cystica 3.acneconglobata [Alias]A different dimension ... ester, Paul skin Ling, β cis-retinoic acid, RO43780CAS 4759-48-2[Specification]99.9% [formula]C20H28O2 [Molecular weight]300.44 [Melting ... ]1, dry skin, itching, chapped and other mucous membranes. 2, liver and kidney dysfunction, high blood lipids and the disabled ...