What are the benefits of soaking feet in sodium bicarbonate?
Nov 03, 2025
Source: Cainiu Health
Dr. Liu Wenmin
Introduction
Sodium bicarbonate has certain cleaning properties. When dissolved, the resulting solution helps loosen dirt and residual sweat on the surface of foot skin, especially providing more thorough cleansing for areas prone to accumulating grime, such as between toes and the soles, thereby keeping feet clean. Foot odor is often related to substances produced by sweat decomposition; sodium bicarbonate solution can neutralize some acidic substances, reducing the sources of odor.
Sodium bicarbonate foot soaks generally offer several benefits, including cleaning dirt from the feet, reducing foot odor, softening foot calluses, relieving foot discomfort, and assisting in cleaning socks and shoes. Detailed explanations are as follows:
1. Cleaning dirt from the feet: Sodium bicarbonate has mild cleansing properties. When dissolved in water, it helps loosen dirt and sweat residue on the skin surface of the feet. It is particularly effective at thoroughly cleaning areas prone to accumulating grime, such as between the toes and the soles, helping keep the feet clean.
2. Reducing foot odor: Foot odor is often caused by substances produced during sweat breakdown. Sodium bicarbonate solution can neutralize certain acidic compounds, reducing the sources of odor, while also inhibiting the growth of some bacteria, thereby alleviating foot odor and leaving the feet smelling fresher.
3. Softening foot calluses: Prolonged walking can lead to thick, hardened skin on the feet. Sodium bicarbonate solution can penetrate the stratum corneum, helping to soften calluses on the soles and tough skin around the toes. After soaking, gently scrubbing can remove some of the dead skin, leaving the feet smoother.
4. Relieving foot discomfort: Standing or walking for long periods may cause soreness and swelling in the feet. Soaking feet in warm sodium bicarbonate solution promotes blood circulation, relaxes foot muscles, and helps relieve fatigue, soreness, and other discomforts, providing a soothing sensation.
5. Assisting in cleaning socks and shoes: When soaking your feet, placing worn socks into the diluted sodium bicarbonate solution can help eliminate odors and some stains from the fabric. The solution can also be used to wipe the inside of shoes, aiding in cleaning and reducing lingering odors.
When using sodium bicarbonate for foot soaks, pay attention to the solution concentration—avoid overly strong solutions that may irritate the skin. The ideal water temperature is around 40°C (104°F), and soaking should not exceed 20 minutes. Avoid use if there are cuts, wounds, or skin inflammation to prevent worsening irritation. After soaking, dry your feet promptly and maintain cleanliness and dryness.
