The Absorption and Systematic Pharmacokinetics of IDP-123 Lotion in Comparison with Tazorac Cream.

Randomized study evaluating the absorption and systematic pharmacokinetics of IDP-123 lotion in comparison with Tazorac Cream in subjects with moderate to severe acne vulgaris under maximal use conditions.

Key Inclusion Criteria:

• Male or female, at least 9 years of age (at least 12 years of age for Tazorac Cream).
• Verbal and written informed consent must be obtained. Subjects less than age of consent must sign an assent for the study and a parent or a legal guardian must sign the informed consent (if the subject reaches age of consent during the study they should be re-consented at the next study visit).
• Subject must have a score of 3 (moderate) or 4 (severe) on the Evaluator's Global Severity assessment at the screening and baseline visit.
• Subjects with facial acne inflammatory lesion count no less than 20 but no more than 40.
• Subjects with facial acne non-inflammatory lesions count no less than 20 but no more than 100.

Key Exclusion Criteria:

• Use of an investigational drug or device within 30 days of enrollment or participation in a research study concurrent with this study.
• Any dermatological conditions on the face that could interfere with clinical evaluations such as acne conglobate, acne fulminans, secondary acne, perioral dermatitis, clinically significant rosacea, gram-negative folliculitis, dermatitis, eczema.
• Any underlying disease or some other dermatological condition of the face that requires the use of interfering topical or systemic therapy or makes evaluations and lesion count inconclusive.
• Subjects with a facial beard or mustache that could interfere with the study assessments.
• Subjects with more than 2 facial nodules.