Multi-Plant Concentrated Powder Improved Skin Whitening: A Double-Blinded, Randomized, and Placebo-Controlled Clinical Study

IF 2.3 4区医学 Q2 DERMATOLOGY

Journal of Cosmetic Dermatology Pub Date : 2025-02-10 DOI:10.1111/jocd.70011

Yuxiang He, Yongshi Bu, Chi-Fu Chiang, Yung-Hsiang Lin, Chia-Hua Liang, Leong-Perng Chan, Jiawen Sun

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引用次数: 0

Abstract

Introduction

With the growing demand for skin-enhancing products in the market, research into edible plants has expanded significantly. Numerous studies have shown that plant extracts rich in phytochemicals can effectively improve skin issues such as wrinkles, pigmentation, and dullness. However, clinical studies focusing on the effects of combined ingredients are still limited.

Objective

This study combined three plant ingredients known for their skin-beautifying effects and clinically tested their functional properties.

Methods

Sixty healthy subjects were screened and randomly divided into two groups: a test group (TG) and a placebo group (PG). TG took two tablets of multi-plant concentrated powder daily, while PG took placebo tablets without active ingredients. The study lasted 12 weeks. Plasma Trolox equivalent antioxidant capacity (TEAC), superoxide dismutase (SOD), and glutathione peroxidase (GPx) were measured at week 0 (W0), week 8 (W8), and week 12 (W12). Skin brightness (L* value), skin tone (Individual Typological Angle (ITA°)), erythema (a* value), skin spots, and wrinkles were assessed at week 0 (W0), week 4 (W4), week 8 (W8), and week 12 (W12).

Results

The study showed significant improvements in all three antioxidant markers in the blood after consuming the compound ingredient tablets compared to the PG (p < 0.01). L* value and ITA° significantly increased from 8 weeks (p < 0.1). Skin spots significantly decreased at W8 and W12 (p < 0.1). While a* value and skin wrinkles showed noticeable reductions within the group in week 12 (p < 0.1), there were no significant differences compared to the PG.

Conclusions

Consumption of multi-plant concentrated powder improved skin whitening, brightened skin tone, reduced skin spots, and showed some improvement in wrinkles and erythema.

Trial Registration

ClinicalTrials.gov identifier: NCT05988567

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来源期刊

Journal of Cosmetic Dermatology DERMATOLOGY-

CiteScore

4.30

自引率

13.00%

发文量

818

审稿时长

>12 weeks

期刊介绍： The Journal of Cosmetic Dermatology publishes high quality, peer-reviewed articles on all aspects of cosmetic dermatology with the aim to foster the highest standards of patient care in cosmetic dermatology. Published quarterly, the Journal of Cosmetic Dermatology facilitates continuing professional development and provides a forum for the exchange of scientific research and innovative techniques. The scope of coverage includes, but will not be limited to: healthy skin; skin maintenance; ageing skin; photodamage and photoprotection; rejuvenation; biochemistry, endocrinology and neuroimmunology of healthy skin; imaging; skin measurement; quality of life; skin types; sensitive skin; rosacea and acne; sebum; sweat; fat; phlebology; hair conservation, restoration and removal; nails and nail surgery; pigment; psychological and medicolegal issues; retinoids; cosmetic chemistry; dermopharmacy; cosmeceuticals; toiletries; striae; cellulite; cosmetic dermatological surgery; blepharoplasty; liposuction; surgical complications; botulinum; fillers, peels and dermabrasion; local and tumescent anaesthesia; electrosurgery; lasers, including laser physics, laser research and safety, vascular lasers, pigment lasers, hair removal lasers, tattoo removal lasers, resurfacing lasers, dermal remodelling lasers and laser complications.