Mixing CysWhite™ with Absolue Soft Cream Base

While CysWhite™ (Cysteamine HCL) is soluble in water and can be physically mixed into the Absolue Soft Cream Base (which contains water), this combination is not recommended due to several factors related to stability and intended use.

• Stability: CysWhite™ has low stability when dissolved in water. For a long shelf-life, an anhydrous (water-free) formula is recommended. The Absolue Soft Cream Base is an aqueous base, meaning it contains water, which will likely compromise the stability and effectiveness of CysWhite™ over time compared to an anhydrous formulation.
• Usage Instructions: CysWhite™ is typically used as a wash-off treatment, applied for only 15-30 minutes before being rinsed off. The Absolue Soft Cream Base, however, is designed as a leave-on cream, suitable for application before bedtime. These usage methods are incompatible. Using CysWhite™ in a leave-on product contradicts its recommended application and safety guidelines.

What else would be needed (if mixing despite recommendations)?

If you were to proceed with mixing (which is not advised), you would need to add additional ingredients:

• Odor-Kill™: CysWhite™ has a strong, unpleasant smell (like rotten eggs). Adding 1-2% Odor-Kill™ is recommended to help absorb this odor.
• ActiveProtec™ OX: To help extend the limited life of CysWhite™ in a water-based formula like this cream base, it is recommended to include ActiveProtec™ OX. However, even with this, the stability will not be as good as in an anhydrous formula.

In summary: While mixing is physically possible, it is strongly advised against due to the significant stability issues of CysWhite™ in water-based formulas and the incompatible usage instructions of the two products. It would be better to formulate CysWhite™ in a system specifically designed for its properties, such as an anhydrous base or a properly stabilized wash-off product.