Safety Study to Assess the Potential for Adrenal Suppression Following Maximal Use Treatment With DSXS

Evaluate the potential of DSXS topical product to suppress HPA axis function in patients with
moderate to severe scalp psoriasis. Evaluate the efficacy parameters and adverse event (AE)
profiles of DSXS topical product administered to patients with moderate to severe scalp
psoriasis.

Inclusion Criteria:

- Male or non-pregnant, non-lactating females 18 years of age or older.

- IRE-approved, signed informed consent form that meets all criteria of current FDA
regulations.

Exclusion Criteria:

- Females who are pregnant, nursing, planning to become pregnant during the duration of
the study, or if of child-bearing potential and sexually active and not prepared to
use appropriate contraceptive methods to avoid pregnancy.