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STANLEY I. CULLEN, MD, BS Pharm

Arch Dermatol. 1965;92(4):431-432.

Abstract
One percent crude coal tar, with and without polysorbate 80, was incorporated into a variety of commercially available cream and ointment bases. The observation was confirmed that mixing 0.5% polysorbate 80 with crude coal tar prior to its addition into the ointments caused the coal tar particles to be evenly dispersed and to be of uniform size. However, when crude coal tar is incorporated into a cream the particles are evenly dispersed without the use of a surfactant.

Author Affiliations
MIAMI

From the Department of Dermatology, University of Miami School of Medicine.

Footnotes
Accepted for publication June 3, 1965.

Reprint requests to the Department of Dermatology, University of Miami School of Medicine, Miami, Fla 33136.

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