Characteristics and Stability of High Purity Cosmetic Urea Powder

The product Urea (High Purity, Cosmetics, Powder) (Product ID 149) is a high-purity ingredient with the following characteristics:

1. Form: It is a powder with ultra-high purity (> 99%). This powder is typically a fine, white crystalline powder, which is the form commonly known as "urea crystal."
2. Solubility: Yes, it is highly water-soluble. The product description provides instructions for dissolving it in the formula.

Important Note on Stability:
When dissolving Urea, it can cause the pH of the formula to become more alkaline over time, especially when stored at temperatures above 35°C. For products requiring a shelf-life of more than 3 months, stabilization is necessary. The recommended technique is to use Gluconolactone at about 15% of the Urea amount (e.g., 1.5% Gluconolactone for 10% Urea) to help control the pH in the optimal range of 4-5.5.