What Is Potassium bicarbonate?

Learn about the buffering characteristics of Potassium bicarbonate and its usage in personal care products.

What Is Potassium bicarbonate? Brandon Jones / IngredientReviewer

Last Updated: October 2, 2024

Written by Brandon Jones

What Is Potassium bicarbonate?

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Potassium bicarbonate is a white, dry powder or liquid used in cosmetics as a buffering agent. It has no smell and looks like colorless crystals or white powder or granules. It is also used in organic farming to control powdery mildew and apple scab because it has fungicidal properties. Potassium bicarbonate is produced by passing carbon dioxide through an aqueous potassium carbonate solution. It can be used as an antacid in medicine and is registered as safe for over-the-counter use by the FDA. In baking, it's utilized as a source of carbon dioxide for leavening and can regulate pH levels in foods. Potassium bicarbonate is also found in club soda where it softens the effect of bubbles fizzing up when opened.

What is the purpose of Potassium bicarbonate in personal care products? It is used for its buffering characteristics. Potassium bicarbonate regulates the pH balance.

Names and identifiers that we found for this substance include: Potassium Bicarbonate, Potassium hydrogen carbonate, and "Carbonic acid, potassium salt (1:1)".

What Are Buffering Ingredients?

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Potassium bicarbonate has buffering characteristics.

Buffering ingredients helps regulate and maintain the pH balance of cosmetic products. The pH scale is a method used to determine a mixture's acidity or alkalinity level. Our skin's natural pH balance helps it stay healthy and function properly. When cosmetic products are applied to the skin, they can alter the pH balance, potentially causing irritation or other adverse effects.

Buffering ingredients neutralize or adjust the pH of cosmetic products to match that of the skin, which helps minimize the risk of irritation or damage. By maintaining a consistent pH balance, buffering ingredients can also improve the stability and effectiveness of a product's active ingredients.

Types of Buffering Ingredients

Here are some of the most common types of buffering ingredients:

  • Alkalis: These have a high pH and are used to neutralize acids. They help maintain the product's pH within a desired range.

  • Acids: These have a low pH and are used to neutralize alkalis. They help maintain the cosmetic product's pH within a desired range.

  • Salts: These are formed when an acid and a base (alkali) are mixed. They help maintain the cosmetic product's stability by preventing changes in pH caused by external factors such as heat or exposure to air.

Safety

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Remember, always read and follow the instructions provided on product labels carefully. If you have any questions or concerns about using a product containing various ingredients, consult with your doctor or healthcare provider before use.