R-Tree DMDM Hydantoin Preservative Liquid Combo (500 g + 500 g) is a high-quality cosmetic-grade antimicrobial preservative designed to help protect water-based personal care formulations from microbial contamination. This value combo provides a reliable solution for maintaining product stability, extending shelf life, and ensuring consistent performance in professional and DIY cosmetic production. DMDM Hydantoin is widely used in skincare and haircare formulations such as creams, lotions, shampoos, conditioners, face washes, liquid soaps, and cleansing products. It helps control the growth of bacteria, yeast, and mold, making it an essential ingredient for maintaining the safety and freshness of cosmetic products during storage and use. The liquid form allows easy blending into formulations and ensures even distribution throughout the product. Its effectiveness at low usage levels helps preserve the integrity of formulations without altering texture, appearance, or performance. This makes it a practical choice for formulators looking for a stable and dependable preservative system. This combo pack includes 2 bottles of 500 g each (Total 1 kg), making it ideal for bulk manufacturing, professional cosmetic labs, and serious DIY formulators who require larger quantities of reliable preservative solutions.