Green and White Tea Extracts

INCI Name: Camellia Sinensis Leaf Extract
Part Used: Leaves
Tea Classes: The various types of teas all are made from the same plant and fall into four classes
Green Tea – Fresh leaves dried
Black Tea – Leaves are fermented, then dried
Oolong Tea – Leaves are partially fermented, then dried
White Tea – Fresh buds and young leaves dried
Plant Description: The tea plant ranges in height from 3 to 40 feet and has small shiny, dark green leaves. The small, fragrant flowers have white petals, and the fruits contain one round, pale brown seed. The perennial evergreen is native to Asia and grows in a variety of climates throughout the world.
Chemistry: Tea contains six classes of flavonoids, the most important being the flavonols. These flavonols are the most powerful natural antioxidants identified to date, superior to vitamins C and E and beta carotene. The most abundant and effective flavonols are:
EGCG (epigallocatechin-3- gallate) Twenty times more
potent than vitamin C
ECG (epicatechin-3-gallate)
EGC (epigallocatechin)
EG (epicatechin)
Tea Properties Studies have indicated the following properties:
(1) Powerful Antioxidant/DNA Protection/Anti-aging

(1a) EGCG stimulates DNA synthesis and energy generation in aged epidermal keratinocytes

(1b) Green Tea Polyphenols improve facial skin texture and appearance/reduces wrinkles

(2) Reduces sun damage and photo-aging caused by UVA and UVB radiation exposure with topical use.

(2a) Anti-inflammatory when topically applied

(3) EGCG promotes hair gowth in hair follicles

(4) Green Tea showed efficacy treating acne

(4a) Reduces skin sebum production

(5) Antimicrobial properties of tea

(6) Antiviral activity of Green Tea as hand wash disinfectant

Applications: Skin Care
Sun Care – pre & post
Hair care – scalp benefits
Soaps – bar and liquid
Acne Products
Standardized Green Tea Extracts Available:

Green Tea (30% Polyphenols) Extract
Green Tea (90% Polyphenols) Extract with 46% EGCG
White Tea (30% Polyphenols) Extract

Reference:
  1. Muktar Ph.D.;”Antioxidant Components of Green Tea and Skin Care Products”, Society of Cosmetic Chemists Annual Scientific Meeting and Technology Showcase; 1999
  2. Pillai S, Mitscher A, Menon S et al; “Antimutagenic/ Antioxidant Activity of Green Tea Components and Related Compounds”, Journal of Environmental Pathology, Taxicoloty and Oncology, 1999
  3. Stephen Hsu, Wendy Bollag, Jill Lewis, et al; “Green Tea Polyphenols Induce Differentiation and Proliferation in Epidermal Keratinocytes”, The Journal of Pharmacology and Experimental Therapeutics; 2003
  4. Elmets C, MD, Singh D. MD et al; “Cutaneous photoprotection from ultraviolet injury by green tea polyphenols”; Journal Am Acad Dermatology, 2001
  5. Katiyr, S., Matusi M, Elmets C, Mukhtar H, “Polyphenolic Antioxidant Epigallocatechin-3-Gallate from Green Tea Reduces UVB Induced Inflammatory Responses and Infiltration of Leukocytes in Human Skin”; Photochemistry and Photobiology, 1998
  6. Pajonk F, Reidisser A, et al; “Tea Extracts Effective for Reducing Skin Inflammation due to Radiation Therapy”, BMC; 2006
  7. Kwon OS, Han JH, Yoo HG, et al, “Human hair growth enhancement in vitro by green tea epigallocatechin-3-gallate (EGCG)”, Phytomed; 2007
  8. Elsaie Mohamed L, “The efficacy of topical 2% green tea lotion in mild-to-moderate acne vulgaris”, Journal of Drugs in Dermatology; 2009
  9. Sharquie, Khalifa, Al-Turfi, Ihsan et al, ” Treatment of acne vulgaris with 2% topical tea lotion, Saudi Med J; 2006
  10. Mahmood T, Akhtar N, Khan BA, et al, “Outcomes of 3% green tea emulsion on skin sebum production in male volunteers”, Bosn J Basic Med Sci, 2010
  11. N. Hosseini Jazani, Sh, Shahabi et al; “Antibacterial Effects of Water Soluble Green Tea Extracts on Multi-Antibiotic Resistant isolates of Acinetobacter” Pakistan Journal of Biological Sciences, 2007
  12. JMT Hamilton-Miller, “Antimcrobial Properties of Tea (Camellia sinensis L.), Antimicrobial Agents and Chemotherapy; 1995
  13. T.I. Mbata, Lu Debaio, A. Saikia, “Antibacterial Activity of the Crude Extract of Chinese Green Tea (Camellia Sinensis) On Listeria Monocytogenes”; The Internet Journal of Microbiology 2006
  14. Shin, WJ, Kim YK, Lee KH, Seong BL, ” Evaluation of the Antiviral Activity of a Green Tea Solution as a Hand-Wash Disinfectant” Biosci.Biotechnol, Biochem; 2012
Tea Types Green: Dragonwell – China
Gunpowder – China
Jasmine – China
Young Hyson – China
Sencha Leaf – Japan
Kukicha Twig – Japan
Black: China Black – China
Keemum Congu – China
Lapsang Souchong – China
Assam – India
Darjeelng – India
Nilgiri (Flowery Orange Pekoe),- South India
Ceylon High Grown (Broken Orange Pekoe) – Sri Lanka
Oolong: Se Chung Special Oolong – China Ti Kuan Yin Spring Floral Oolong – China
White: Silver Needle – China
White Peony Tea – (Bai Mu Dan) – China