Hebei Messi Biology Co., Ltd. states that in scenarios such as high summer temperatures and sports activities, antiperspirant sticks have become an essential product for daily personal care. Within the formulation of antiperspirant sticks, specialized magnesium hydroxide serves as one of the key raw materials for achieving long-lasting sweat control, gentle skin care, and stick stability. Different from industrial-grade magnesium hydroxide, it is characterized by high purity, fine particle size, weak alkalinity, and high compatibility, playing the role of a gentle odor-control component in the beauty and personal care field.
Magnesium hydroxide, with the chemical formula Mg(OH)2, is a white, powdery inorganic compound. The specialized grade used for antiperspirant sticks undergoes purification and surface treatment, offering advantages such as uniform particle size, good dispersibility, a mild pH, and non-irritating properties. It matches cosmetic standards for direct skin contact, helping to ensure both efficacy and safety in use. In antiperspirant sticks, magnesium hydroxide primarily plays a key role in controlling sweat and neutralizing odor. Through a dual mechanism of physical adsorption and chemical regulation, it absorbs excess sweat and oil on the skin surface while regulating the pH of the underarm microenvironment, thereby inhibiting the growth of odor-causing bacteria. Unlike aluminum salt-based antiperspirants with strong astringent properties, magnesium hydroxide does not clog pores or disrupt the normal physiological function of sweat glands. It maintains dryness and comfort in a gentle manner, making it suitable for long-term use on sensitive skin.
Secondly, it is an important additive for the stable formulation and skin-feel optimization of antiperspirant sticks. Antiperspirant sticks need to be easy to apply, non-sticky, non-flaking, and firm. As an inorganic filler and thickening component, magnesium hydroxide can improve the hardness and shape retention of the stick, preventing softening, breaking, or oil separation at high temperatures. At the same time, it imparts a smooth, matte finish upon application, reducing stickiness for a fresher user experience. Additionally, magnesium hydroxide exhibits mild skin-care properties. Its weakly alkaline nature can neutralize acidic substances produced by sweat decomposition, alleviating underarm skin discomfort caused by moisture and friction, and reducing the risk of redness and itching. The high-purity raw material is free of heavy metals and harmful impurities. It has strong compatibility, coexisting stably with fragrances, moisturizers, oils, and other ingredients without reacting, discoloring, or causing irritation, which aligns with cosmetic safety standards.
Unlike industrial-grade magnesium hydroxide, the grade used in antiperspirant sticks adheres to cosmetic-grade standards, focusing on the control of purity, whiteness, heavy metal content, microbial indicators, and particle size distribution. The ultra-fine particle size ensures uniform dispersion in the stick without causing a grainy texture or scratching the skin; high whiteness ensures a clean product appearance; and low impurity levels ensure long-term storage stability without deterioration or syneresis (water separation). Under the trend of green beauty, magnesium hydroxide stands out as an environmentally friendly inorganic raw material. It is naturally sourced, biodegradable, and poses no risk of environmental accumulation. Its production and application processes are clean, aligning with modern consumers’ demands for safe, natural, and sustainable skincare products.
From daily commuting to outdoor sports, magnesium hydroxide for antiperspirant sticks provides a dry experience through its mild, efficient, and stable performance. It serves as both a functional raw material that enhances product quality and a gentle ingredient that protects skin health, continuing to play an important role in the personal care sector and becoming a preferred formulation component for high-quality antiperspirant products.