White Tea Leaf Extract

The Basics On White Tea Leaf Extract

What is White Tea Leaf Extract?

Extract from the minimally processed buds and leaves of green tea.

What are other names for White Tea Leaf Extract?

WHITE TEA LEAF EXTRACT

What is White Tea Leaf Extract used for?

In a nutshell, white tea extract keeps your skin looking younger by protecting it from damage. Researchers believe that the antioxidants reduce oxidative stress to the skin. This type of stress is thought to promote skin cancer, wrinkles and uneven pigmentation. … White tea extract to the rescue!

How White Tea Leaf Extract is classified

Antioxidants, Plant Extracts

Recommendations for using White Tea Leaf Extract during pregnancy and breastfeeding

Limited data suggests no known risk

 

White Tea Leaf Extract During Pregnancy

What we know about using White Tea Leaf Extract while pregnant or breastfeeding

Limited information available.

There were no adverse effects when pregnant Wistar rats (n = 6) were orally administered camellia sinensis extract (0, 84, 167, 501, and 1336 mg/mL/d; in the form of black tea).71 The caffeine content was 4.14% (865 mg for the highest dose). The test material was administered either on gestation days 1 ‚Äì 7, 8 ‚Äì 14, or 15 ‚Äì 21. Internal examinations of the dams were conducted by laparoscopy under anesthesia on gestation day10 (early dose groups) or 15 (mid dose groups). Pups were examined daily until the appearance of hair and the opening of the eyelids. The test doses were calculated to be equivalent to 1.5, 3, 9, and 24 cups of tea. There were no mortalities. There were no differences in number of pregnancies, number of uterine implants, number of viable implants, implantation index, pre-implantation loss, post-implantation loss, gestation index, number of pups born, litter index, live birth index, and viability index compared to controls. There were no differences in length of the implants/fetus, gestation duration, cranial length, cranial diameter, and tail length of pups. There were no differences in time taken to open eyes, eruption of incisors and appearance of fur. There were no gross morphological birth abnormalities observed. CAMELLIA SINENSIS CATECHINS Unpublished studies were submitted to the FDA for the approval of a topical ointment as a drug that contains up to 15% camellia sinensis catechins to treat warts.72 These studies are summarized in Table 8. In oral studies, there were increased resorptions at 1000 mg/kg/d in rats. In subcutaneous studies, the test substance was not well tolerated; subcutaneous lesions with necrosis developed. There were spontaneous abortions, increased resorptions, and increased fetal malformations at doses as low as 12 mg/kg/d. Intravaginal administrations up to 0.15 ml/d yielded fewer adverse effects. When camellia sinensis catechins (1400, 4200, 14000 ppm in feed; EGCG 90%, ECG ‚â§3.01%, GCG ‚â§0.12%, other catechins ‚â§0.54%) were administered to pregnant Wistar (SPF) rats (n = 25) on gestation days 6 – 20, there were no adverse effects observed.73 All rats survived treatment and there were no clinical signs. There was a transient reduction in feed consumption in the high-dose group and an increase in water consumption in the mid- and high-dose groups. There were no treatment-related macroscopic findings in the dams. There was no effect to embryo/fetal survival, fetal weights, or sex ratios. In a two generation study of camellia sinensis catechins (1200, 3600, 12000 ppm in feed) using Sprague-Dawley rats (n = 30/sex), there were no adverse effects in either generation. The rats were treated for 10 weeks and then paired for mating. The diet continued through gestation until after weaning. The dams were killed and necropsied after weaning. The pups were culled to 25/sex and the above treatment repeated with mating taking place after 8 weeks. The offspring of the high-dose group had decreased growth rates, and there was an increase in pup loss. A growth effect among pups was also observed at 3600 ppm, but only in the second generation. Both sexes of the F1 generation in the high-dose group showed decreased absolute kidney and liver weights. The F1 males had decreased spleen and prostate weights, but the females’ spleens were normal. Histological examination revealed no abnormalities. The lowest dose was considered the overall NOAEL. The authors derived a NOAEL of 200 mg/kg body weight per day EGCG preparation. Because dams consumed twice the amount of feed during the crucial lactation period, during which effects occurred, twice the lowest dose (i.e., 2 x 100 mg/kg/d) was estimated to be the NOAEL. 73

General safety info about White Tea Leaf Extract from CIR

Cosmetic ingredients derived from Camellia sinensis (tea) plant parts function as antioxidants, and skin-conditioning agents – humectant and miscellaneous. The Cosmetic Ingredient Review (CIR) Expert Panel reviewed relevant animal and human data related to these ingredients. The use of the leaf ingredients in beverages result in larger oral exposures than those from cosmetic uses. Therefore, oral toxicity potential was not the focus of this safety assessment. Because formulations may contain more than one botanical ingredient, caution was urged to avoid reaching levels of toxicity for constituents. Industry should use good manufacturing practices to limit impurities. The Panel concluded that camellia sinensis leaf extract is safe up to 0.86% in leave-on products and up to 1% in rinse-off products. Camellia sinensis catechins is safe as used. The available data are insufficient to determine that the remaining non-leaf/stem-derived ingredients are safe under the intended conditions of use in cosmetics.

Use this, not that!

Products where you might find White Tea Leaf Extract

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