A two-year, double-blind, randomized placebo-controlled trial of oral green tea polyphenols on the long-term clinical and histologic appearance of photoaging skin

Study Design

Subject Type

Human

Trial Design

Double-Blind, Randomised, Controlled

Trial Duration

730 days

Participants

56 (35 completed)

Age Range

25-75 years

Efficacy

Intervention(s)			Outcome		Method		Effect	Description
Green Tea			Facial Pores		VISIA		–	Sign in to read for free
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Green Tea			Fine Lines		Clinical grading		–	Sign in to read for free
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Green Tea			Hyperpigmentation		VISIA		–	Sign in to read for free
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Green Tea			Skin Redness		Clinical grading		–	Sign in to read for free
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Green Tea			Skin Smoothness		VISIA		–	Sign in to read for free
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Green Tea			Skin Thickness		Histology		–	Sign in to read for free
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Green Tea			Spider Veins		Clinical grading		–	Sign in to read for free
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Green Tea			Wrinkles		Clinical grading		–	Sign in to read for free
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Mechanisms

Intervention(s)			Outcome		Method		Effect	Description
Green Tea			Collagen		Histology		–	Sign in to read for free
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Green Tea			Elastic Fibres		Histology		–	Sign in to read for free
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Green Tea			Elastosis		Histology		–	Sign in to read for free
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Green Tea			Glycoproteins		Histology		–	Sign in to read for free
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Green Tea			Inflammation		Histology		–	Sign in to read for free
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Green Tea			Melanin		Histology		–	Sign in to read for free
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Study Summary

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