Okay, I understand you're interested in a sweat-resistant sunscreen formula and are asking if you can substitute water with Pure Aloe Vera Gel in the formula recommended by the staff to address the white cast issue you experienced with your previous formula (Pure Aloe Vera Gel + SPF Protect Ultra + Amino Plus + Soy Extract).

The staff recommended a new formula specifically for oily skin and to prevent white cast when sweating, which includes ingredients like Titanium Dioxide, Zinc PCA, Licorice Extract, Safe-B3, Pro Polymer, Phenoxyethanol SA, and Water.

Regarding your question about replacing water with Pure Aloe Vera Gel in this recommended formula:

Substituting Water with Pure Aloe Vera Gel

It is generally not recommended to directly substitute the water in a formulation with a pre-made gel product like Pure Aloe Vera Gel. Here's why:

• Composition: Pure Aloe Vera Gel is not simply aloe vera extract dissolved in water. It is a base product that already contains water, along with gelling agents (like Pro Polymer, as seen in the description for Pure Aloe Vera Gel ID 80), preservatives, and potentially other ingredients.
• Formula Stability: The staff's recommended formula is carefully balanced using specific ingredients, including Pro Polymer, to achieve the correct texture and ensure the stability of the sunscreen filters (like Titanium Dioxide). Adding another pre-made gel base with its own gelling agents can disrupt this balance, potentially leading to:
  • Separation of the ingredients.
  • Changes in viscosity or texture that make the product unpleasant or ineffective.
  • Reduced stability or efficacy of the active ingredients.
• Ingredient Compatibility: The ingredients in the recommended formula are chosen for their compatibility with water and the specific gelling system used. The components within the Pure Aloe Vera Gel base might not be compatible with the other ingredients in the sunscreen formula.

The staff's recommended formula using water as the base is designed to be sweat-resistant and minimize white cast for oily skin. To ensure the best performance and stability of this sunscreen, it is advisable to follow the formula as provided, using purified water.

If you wish to incorporate the benefits of aloe vera, you could consider using a compatible aloe vera extract ingredient at an appropriate concentration, but this would require careful reformulation and testing to ensure stability and performance.

Therefore, for the best results with the sweat-resistant formula recommended by the staff, please use water as specified in the formula.