Stratum corneum adhesive tape stripping

influence of anatomical site, application pressure, duration and removal

LÖFFLER, H.
DREHER, F.
MAIBACH, H. I.

*Department of Dermatology, University of California, San Francisco, CA, U.S.A.
†Department of Dermatology, Philipp University, Deutschhausstr. 9, D-35033 Marburg, Germany
‡TOPALIX, Topical Product Development, San Francisco, CA, U.S.A.

Correspondence: H.Löffler. E-mail: [email protected]

Accepted for publication 8 February 2004

British Journal of Dermatology 151(4):p 746-752, October 2004.

Summary

Background

Tape stripping is a common method for investigating stratum corneum (SC) physiology as well as bioavailability and bioequivalence of topical drugs.

Objectives

To investigate the influence of procedures (anatomical site, pressure, pressure duration, tape removal rate) inherent in each stripping protocol on changes in skin physiology.

Methods

Tape stripping was performed using tapes on the forearm, forehead and back. On the forearm different pressures (165 and 330 g cm⁻²), durations of pressure (2 and 10 s), and removal rate (slow and rapid removal) were used. Changes in skin physiology were evaluated by measurement of transepidermal water loss (TEWL) and hydration.

Results

A significant influence of all parameters on the TEWL increase as a function of tape strip number was observed. The fastest increase was demonstrated on the forehead, followed by the back and, lastly, the forearm. Rapid removal produced a protracted increase in comparison with slow removal. Pressure for 10 s induced a faster increase in TEWL than 2 s pressure. Likewise, pressure at 330 g cm⁻² induced an earlier increase than pressure at 165 g cm⁻². Skin hydration was not influenced by the variables tested.

Conclusions

Tape stripping results are influenced dramatically by all investigated parameters. A dynamic SC stress test to investigate SC cohesion more closely is proposed based on the present observations.