When there's too much lactic acid building up too fast, the kidneys can't keep up, causing you to feel the symptoms of lactic acidosis. It also can do damage to your organs.

Lactic acid is a natural byproduct of the body. It is integral to good health and does not result from exercise or cause soreness. Learn more here.

The 9 best lactic acid serums to help gently exfoliate and brighten skin, according to expert dermatologists and beauty editors—tested and reviewed.

Lactic acid is an over-the-counter chemical exfoliant that comes from the fermentation of lactose — a carbohydrate found in milk. It's a popular ingredient in numerous skin care products nowadays.

Lactic acid was once believed to be the cause of sore muscles after exercise. It’s not. Another substance, lactate, contributes. However, what causes muscle burn and pain is more complex.

People often discuss the importance of removing, or “flushing out,” lactic acid from the blood after intense exercise to reduce muscle soreness, speed recovery, or boost athletic performance.

Metabolic insights of lactic acid bacteria in reducing off‐flavors and antinutrients in plant‐based fermented dairy alternatives. Comprehensive Reviews in Food Science and Food Safety , 2025 ...