Whey Filtrate
INCI: WHEY FILTRATE
Reviewed by Rosie · Last updated 2 Jun 2026
A milk-derived protein fraction with potential skin-conditioning and growth-supporting properties
Best For Skin Types
All
Addresses
Usage Frequency
Daily
What Is Whey Filtrate?
Whey filtrate is a protein-rich fraction derived from milk whey, obtained through filtration and separation processes. It contains various proteins and bioactive compounds, including growth factors and peptides that have been identified in milk constituents.
In skincare formulations, whey filtrate functions primarily as a skin conditioner. Its protein content may help support skin hydration and provide amino acids that contribute to skin structure and resilience.
How It Works
Whey filtrate contains several protein fractions and peptides. Some of these components have been shown in laboratory studies to influence cell growth and activity, though the specific mechanisms when applied topically to intact skin require further investigation.
The primary function in skincare is hydration and conditioning: the proteins and their constituent amino acids can help skin retain moisture and support the structural integrity of the skin barrier.
Clinical Evidence & References
Laboratory research has identified growth factors and bioactive peptides within whey that influence cell behaviour in cultured cells. However, translating these findings to topical skincare efficacy in humans remains an area with limited direct evidence.
Most clinical support for whey filtrate centres on its role as a general skin conditioner rather than a targeted treatment. Further research would help clarify whether specific bioactive compounds in whey filtrate deliver measurable benefits when applied to skin in finished formulations.
Published Research
How to Use
Whey filtrate appears in moisturisers, serums and other hydrating formulations. It works well as part of a broader skincare routine and does not typically require special application instructions; use as directed by the product formulation.
Safety & Precautions
Frequently Asked Questions
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