Yogurt
INCI: YOGURT
Reviewed by Rosie · Last updated 14 Aug 2026
A fermented dairy ingredient with conditioning and skin-protective properties
Best For Skin Types
All, Dry, Sensitive
Addresses
Usage Frequency
As tolerated
What Is Yogurt?
Yogurt is a fermented dairy product created through the action of lactic acid bacteria on milk. In skincare formulations, it appears as the INCI ingredient YOGURT and functions primarily as a skin conditioner and protectant. The fermentation process creates lactic acid and various microbial metabolites that contribute to its skincare properties.
Historically, yogurt has been used for both nutritional and therapeutic purposes for thousands of years, with origins likely traced to spontaneous fermentation in animal skin bags used for milk transport in warm, arid climates. Its use in cosmetics reflects this long tradition of topical application.
How It Works
Yogurt works through multiple mechanisms. The lactic acid it contains is a naturally occurring alpha-hydroxy acid (AHA) that gently loosens the bonds between dead skin cells on the skin surface, facilitating gentle exfoliation. This process is typically gentler than synthetic AHAs due to the lower concentration of lactic acid in yogurt formulations.
Additionally, yogurt's proteins and fats provide conditioning benefits that help soften and moisturise the skin. The fermentation byproducts may also contribute protective and soothing properties, though the specific mechanisms of these components in topical skincare require further research.
Clinical Evidence & References
Limited clinical evidence specifically examines yogurt as a topical skincare ingredient. Most available research focuses on the nutritional and systemic health benefits of consuming yogurt, particularly related to its probiotic content. Evidence for lactic acid's mild exfoliating properties exists in broader AHA literature, but yogurt-specific studies on skin outcomes are scarce.
The protective and conditioning claims are based largely on traditional use and ingredient composition rather than rigorous clinical trials. Whilst fermented dairy products contain bioactive compounds with potential skin benefits, robust clinical data on topical yogurt formulations remain limited. It is generally well-tolerated by most skin types when used in skincare products.
How to Use
Yogurt is typically found in cleansers, masks, and moisturisers rather than as a standalone treatment. When used in rinse-off formulations such as masks or cleansers, it can be applied to clean skin and used as directed on the product label, usually 1-3 times per week or daily depending on the formulation and your skin tolerance. For leave-on products, follow the manufacturer's instructions. Start with less frequent use if you have sensitive skin and gradually increase frequency as tolerated.
Safety & Precautions
Frequently Asked Questions
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