Topical Astaxanthin Attenuates Imiquimod-Induced Psoriasiform Dermatitis by Downregulating Psoriasis-Associated Keratin Gene Expression (Krt16, Krt17, Krt6a) and Inhibiting the JAK-STAT Signaling Pathway. The gene discussed is SOAT1; the disease is Psoriasiform dermatitis.