Each gram of tretinoin cream contains 0.1% tretinoin in a bland, hydrophilic base. The inactive ingredients include: Butylated hydroxytoluene, Isopropyl myristate, Polyoxyl (40) stearate, Purified water, Sorbic acid, Stearic acid, Stearyl alcohol, Xanthan gum Fact Table Formula C20H28O2 License US FDA Bioavailability - Legal status US: RX Only Chemical Name Tretinoin Elimination half-life 0.5-2 hours Dosage (Strength) 0.04% Gel Pump (50 grams), 0.10% Gel Pump (50 grams) Pregnancy Consult a doctor Brands Retin-A Micro Protein binding Greater than 95% PubChem CID 444795 MedlinePlus a608032 ChEBI 15367 ATC code D10AD01 (WHO), L01XF01 (WHO), D10AD51 (WHO) DrugBank DB00755 KEGG D00094, C00777 Routes of administration Topical