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Clin Cosmet Investig Dermatol. 2016 Oct 7;9:325-332. eCollection 2016.

Overall skin tone and skin-lightening-improving effects with oral supplementation of lutein and zeaxanthin isomers: a double-blind, placebo-controlled clinical trial.

Author information

1
Department of Scientific and Clinical Affairs, OmniActive Health Technologies Inc., Morristown, NJ.
2
James P Bowman & Associates LLC, Loveland, OH, USA.

Abstract

PURPOSE:

Carotenoids, especially lutein and zeaxanthin isomers (L/Zi), filter blue light and protect skin from environmental factors including high-energy sources. These carotenoids may be able to block the formation of melanin pathways, decrease cytokines, and increase antioxidants.

SUBJECTS AND METHODS:

This is a randomized, double-blind, placebo-controlled clinical trial over a 12-week supplementation period. Fifty healthy people (50 healthy subjects were recruited and 46 subjects completed the study) (males and females, age: 18-45 years) with mild-to-moderate dry skin were included in this study. Skin type of the subjects was classified as Fitzpatrick skin type II-IV scale. Subjects were administered with either an oral dietary supplement containing 10 mg lutein (L) and 2 mg zeaxanthin isomers (Zi) (L/Zi: RR-zeaxanthin and RS (meso)-zeaxanthin) or a placebo daily for 12 weeks. The minimal erythemal dose and skin lightening (L*) were measured via the Chromameter®. The individual typological angle was calculated. Subjective assessments were also recorded.

RESULTS:

Overall skin tone was significantly improved in the L/Zi group compared to placebo (P<0.0237), and luminance (L*) values were significantly increased in the L/Zi group. Mean minimal erythemal dose was increased with L/Zi supplementation after 12 weeks of supplementation. L/Zi supplementation significantly increased the individual typological angle.

CONCLUSION:

L/Zi supplementation lightens and improves skin conditions.

KEYWORDS:

individual typological angle; lutein; minimal erythemal dose; overall skin tone; skin lightening; zeaxanthin isomers

Conflict of interest statement

VJ and JD are employees of OmniActive Health Technologies Inc. The authors report no other conflicts of interest in this work.

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