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The use of green tea extract in cosmetic formulations: not only an antioxidant active ingredient.
Dermatol Ther. 2013 May-Jun; 26(3):267-71.DT

Abstract

Green tea (GT) extracts contain polyphenols, known to be effective free radical scavengers, and other ingredients that could also provide benefits to the skin. This is a report on clinical studies using objective, noninvasive methods to evaluate the effects of cosmetic formulations containing GT. Experimental formulations were supplemented or not (vehicle) with 6% Camellia sinensis glycolic leaf extracts (GT). These formulations were applied to the forearm skin of 24 volunteers, and their effects were evaluated before and after 2 hours, 15 and 30 days according to the following parameters: stratum corneum water content, transepidermal water loss, skin viscoelastic-to-elastic ratio (Uv/Ue), and microrelief. The volunteers were instructed not to apply any formulation in an area of the forearm (control area). Experimental formulations (GT) increased skin moisture in the long-term study, indicating that GT has a prolonged moisturizing effect. The Uv/Ue was significantly enhanced after 30 days of topical application of the experimental formulation when compared with vehicle and control. After 15-30 days, skin microrelief was significantly improved due to a reduction in skin roughness. The results suggest that GT-containing cosmetic formulations have pronounced moisturizing effects and improve skin microrelief.

Authors+Show Affiliations

Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of Sao Paulo, São Paulo, Brazil.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23742288

Citation

Gianeti, Mirela D., et al. "The Use of Green Tea Extract in Cosmetic Formulations: Not Only an Antioxidant Active Ingredient." Dermatologic Therapy, vol. 26, no. 3, 2013, pp. 267-71.
Gianeti MD, Mercurio DG, Campos PM. The use of green tea extract in cosmetic formulations: not only an antioxidant active ingredient. Dermatol Ther. 2013;26(3):267-71.
Gianeti, M. D., Mercurio, D. G., & Campos, P. M. (2013). The use of green tea extract in cosmetic formulations: not only an antioxidant active ingredient. Dermatologic Therapy, 26(3), 267-71. https://doi.org/10.1111/j.1529-8019.2013.01552.x
Gianeti MD, Mercurio DG, Campos PM. The Use of Green Tea Extract in Cosmetic Formulations: Not Only an Antioxidant Active Ingredient. Dermatol Ther. 2013 May-Jun;26(3):267-71. PubMed PMID: 23742288.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The use of green tea extract in cosmetic formulations: not only an antioxidant active ingredient. AU - Gianeti,Mirela D, AU - Mercurio,Daiane G, AU - Campos,Patricia M B G Maia, Y1 - 2013/03/13/ PY - 2013/6/8/entrez PY - 2013/6/8/pubmed PY - 2013/11/7/medline SP - 267 EP - 71 JF - Dermatologic therapy JO - Dermatol Ther VL - 26 IS - 3 N2 - Green tea (GT) extracts contain polyphenols, known to be effective free radical scavengers, and other ingredients that could also provide benefits to the skin. This is a report on clinical studies using objective, noninvasive methods to evaluate the effects of cosmetic formulations containing GT. Experimental formulations were supplemented or not (vehicle) with 6% Camellia sinensis glycolic leaf extracts (GT). These formulations were applied to the forearm skin of 24 volunteers, and their effects were evaluated before and after 2 hours, 15 and 30 days according to the following parameters: stratum corneum water content, transepidermal water loss, skin viscoelastic-to-elastic ratio (Uv/Ue), and microrelief. The volunteers were instructed not to apply any formulation in an area of the forearm (control area). Experimental formulations (GT) increased skin moisture in the long-term study, indicating that GT has a prolonged moisturizing effect. The Uv/Ue was significantly enhanced after 30 days of topical application of the experimental formulation when compared with vehicle and control. After 15-30 days, skin microrelief was significantly improved due to a reduction in skin roughness. The results suggest that GT-containing cosmetic formulations have pronounced moisturizing effects and improve skin microrelief. SN - 1529-8019 UR - https://www.unboundmedicine.com/medline/citation/23742288/The_use_of_green_tea_extract_in_cosmetic_formulations:_not_only_an_antioxidant_active_ingredient_ L2 - https://doi.org/10.1111/j.1529-8019.2013.01552.x DB - PRIME DP - Unbound Medicine ER -