Evidence supporting the use of: Saccharomyces cerevisiae peptides
For the health condition: Hair Care (general)

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Synopsis

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

Saccharomyces cerevisiae peptides are gaining attention in the cosmetic and hair care industry, primarily due to their bioactive properties. Scientific studies have shown that yeast-derived peptides, including those from S. cerevisiae, are rich in amino acids, vitamins (notably B-complex), and antioxidants. These components are theorized to support scalp health, enhance the structural integrity of hair, and promote hair growth by nourishing hair follicles and protecting against oxidative stress.

Laboratory and in vitro studies suggest that S. cerevisiae extracts can improve the proliferation of dermal papilla cells, which play a crucial role in hair growth. Some topical formulations containing yeast peptides have demonstrated moisturizing, barrier-enhancing, and anti-inflammatory effects on the scalp, which may indirectly support healthy hair growth and appearance. However, robust clinical trials on humans specifically evaluating S. cerevisiae peptides for hair growth or hair loss prevention are limited. Most evidence is extrapolated from cellular or animal studies, or from the known effects of yeast extracts rather than purified peptides.

In summary, while there is a plausible scientific rationale and some laboratory evidence for the use of S. cerevisiae peptides in general hair care, direct clinical evidence remains limited, and more rigorous studies are required to establish their efficacy and optimal usage in hair health.

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