Citric acid, a naturally occurring compound found abundantly in citrus fruits like lemons and limes, plays a pivotal role in various industries, from food preservation to skincare. Its versatility stems from its chemical properties, making it a valuable ingredient in both natural and synthetic forms.​

Culinary Applications

In the culinary world, citric acid is cherished for its ability to enhance flavors and preserve foods. Pastry chef Paola Velez highlights its use in balancing sweetness in desserts, enhancing sour flavors, and acting as a preservative in jams and canned foods. She advises using it in small quantities to avoid adverse effects, like enamel weakening or tongue sensitivity .​

Health Implications

Citric acid is recognized for its health benefits, including promoting nutrient absorption, preventing kidney stones, and enhancing skin health by promoting cell regeneration. However, it may pose risks for individuals with allergies to molds or its compounds, potentially leading to chronic inflammation or skin irritation. Generally recognized as safe by the FDA, citric acid should be used with caution by those with known sensitivities .​

Skincare and Cosmetic Uses

In cosmetics, citric acid serves as a pH adjuster and preservative, helping to maintain the stability and effectiveness of skincare products. Its antioxidant properties contribute to skin health by promoting cell regeneration and improving skin elasticity. However, due to its acidic nature, it's essential to use products containing citric acid as directed to avoid potential skin irritation .​

Industrial and Household Applications

Beyond food and cosmetics, citric acid is utilized in cleaning products for its antibacterial properties and ability to remove mineral deposits. Its chelating ability makes it effective in binding metals, which is beneficial in various industrial processes. Additionally, citric acid is employed in the pharmaceutical industry to stabilize active ingredients and enhance the taste of medications.