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J Cosmet Dermatol. 2012 Sep;11(3):193-200. doi: 10.1111/j.1473-2165.2012.00624.x.

Reduction of facial wrinkles depth by sleeping on copper oxide-containing pillowcases: a double blind, placebo controlled, parallel, randomized clinical study.

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1
Dermapro Co., Ltd., Skin Research Center, Bangbae-Dong, Seocho-Gu, Seoul, South Korea.

Abstract

BACKGROUND:

Copper up-regulates the secretion of extracellular skin proteins and stabilizes the extracellular matrix once formed. As copper can be absorbed through intact skin, we reasoned that sleeping on pillowcases containing copper-impregnated fibers would reduce skin wrinkles.

OBJECTIVE:

Demonstrate that sleeping on pillowcases containing copper-impregnated fibers reduce facial skin wrinkles.

PATIENTS/METHODS:

An 8-week, double blind, parallel, randomized study was carried out, in which healthy volunteers, aged 30-60, used either copper oxide-containing pillowcases (1% weight/weight) (test group, n = 30) or control pillowcases without copper (control group, n = 31). Skin conditions of the subjects were evaluated by visual grading by two expert graders and by 3D Image Analysis GFM PRIMOS(®) at baseline (before treatment) and following 4 and 8 weeks of sleeping on the pillowcases.

RESULTS:

The use of the copper oxide-containing pillowcase resulted in significant decrease of crow's feet after 4 (P = 0.01) and 8 (P = 0.002) weeks, but none was observed in the control group, as determined by the expert graders. On the basis of the 3D measurements, three roughness (R) parameters were improved after 4 and 8 weeks (P < 0.02) and the Rmax parameter at 8 weeks (P = 0.016) in the test group, but there were no changes in the R-parameters during the course of the study in the control group. The average reduction per month in the R-parameters was approximately 9%. No adverse reactions were observed or reported during the 8 weeks study.

CONCLUSIONS:

Sleeping on copper oxide-containing pillowcases results in reduction of wrinkles depth and overall improvement of skin appearance.

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