Investigation of the Solubility Behavior of ShieldBiso™ DPDT in Sunscreen Systems

The solubility of raw materials not only affects the stability of the system, but also directly affects the skin feel, light transmittance and protective effect of the final product in the development of modern sunscreen products. As a key sunscreen product created by Suzhou Sunland Pharmatech Co., Ltd., ShieldBiso™ DPDT(INCI name: Disodium Phenyl Dibenzimidazole Tetrasulfonate) is gradually becoming a key choice in water-phase sunscreen system with its excellent ultraviolet absorption capacity, safety and formula adaptability.

Experimental data: Dissolution performance in different neutralization systems

In order to deeply evaluate the application characteristics of ShieldBiso™ DPDT, Sunland Pharmatech's application laboratory systematically tested its solubility in different alkaline neutralization systems :

The experimental results show that different neutralizers have significant effects on the solubility of ShieldBiso™ DPDT. Among them, arginine system shows the highest solubility, which not only improves the gentleness of the system, but also provides a better solution for the high transparency formula. Triethanolamine and Aminomethyl propanol are the mainstream choice in the market at present, because of their solubility and convenience of industrial application.

Key features: Formula logic of dissolving after neutralization.

It should be emphasized that ShieldBiso™ DPDT itself is difficult to be directly dissolved in water, and it must be neutralized by alkaline substances to form a soluble structure before it can stably exist in the water phase system. This characteristic puts forward higher requirements for the formulation process, and also provides a regulatory space for the formulation design.

Suggestion on formula application

Combining experimental data with practical development experience, we suggest:

• Amino acids (such as arginine) or organic amine neutralizers are preferred to improve dissolution efficiency.
• To control the order of addition in the neutralization process, it is suggested to neutralize first and then disperse.
• Carefully adjust the pH range to avoid the instability of the system caused by local overbased.
• It has a good application prospect in refreshing, waterproof and transparent sunscreen products.

About Sunland Pharmatech

Suzhou Sunland Pharmatech Co., Ltd. focuses on the research and development, production and application solutions of functional cosmetics raw materials, and is committed to providing high-quality and high-safety innovative ingredients to customers all over the world. Sunland Pharmatech has been deeply involved in the field of sunscreen, and has built a complete technical system from raw material development, application evaluation to formula support.

Relying on the advanced R&D platform and professional technical team, Sunland Pharmatech not only provides stable and reliable products, but also helps customers accelerate the process of product listing and enhance market competitiveness through detailed data and application guidance.

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ShieldBiso™ DPDT provides more possibilities for a new generation of sunscreen formulations with its unique advantages of water-phase sunscreen and adjustable solubility characteristics. In the future, Sunland Pharmatech will continue to deepen raw material research and application innovation, and work with industry partners to promote the development of high-performance sunscreen products.