Evidence supporting the use of: Camellia sinensis
For the health condition: Hair Care (general)

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Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Camellia sinensis, the plant from which green and black tea are derived, has been studied for its potential benefits in hair care due to its rich content of polyphenols, particularly catechins such as epigallocatechin gallate (EGCG). Scientific evidence suggests that these compounds have antioxidant and anti-inflammatory properties, which may help protect hair follicles from oxidative stress and inflammation—factors implicated in hair loss and poor hair health.

Several in vitro and animal studies have indicated that EGCG can promote hair growth by stimulating dermal papilla cells and prolonging the anagen (growth) phase of hair follicles. For example, a study published in Phytomedicine (2007) showed that topical application of EGCG promoted significant hair regrowth in mice. Limited clinical trials in humans suggest similar trends, but the evidence is not robust or widespread.

Additionally, Camellia sinensis extracts are commonly included in shampoos and conditioners, with claims of strengthening hair and reducing dandruff, though these uses are often supported more by their antioxidant profile than by direct clinical evidence.

In summary, while there is a scientific basis for the potential benefits of Camellia sinensis in general hair care, especially due to its antioxidant and anti-inflammatory actions, human clinical evidence is limited and primarily preliminary. The current rating reflects this moderate but not conclusive level of scientific support.

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