Sodium Bicarbonate (Sodium Bicarbonate)

Sodium Bicarbonate is a multifunctional inorganic salt widely used in cosmetic and personal care formulations as a pH buffer, odor-control support, and mild cleansing/deodorizing aid. It helps moderate acidity and can contribute to a fresh, clean sensorial effect, making it a common choice in deodorant-style products where it supports malodor management by neutralizing acidic odor components and helping create a less favorable environment for odor development. It is also used in oral care and select cleansing formats, and may provide a gentle polishing effect in some powder-based applications. Because it can raise pH and may increase the potential for irritation in leave-on products—particularly on sensitive underarm skin—formulations typically balance use level, particle characteristics, and the overall pH strategy, often pairing it with soothing agents and complementary odor-control ingredients to optimize tolerance and performance.