Using Reservoir-Tech with Actives for Controlled Release

Based on the information you provided about Reservoir-tech:

• Which active ingredient to mix with and when to add: According to the information that Reservoir-tech is insoluble in water and oil and should be mixed with active substances, it should be mixed with the active ingredients in your formula, such as Lactic Acid and Sym White. This mixing is intended for controlled release of the actives. Regarding when to add this mixture to your formula, typically pre-mixed components are added at a suitable stage depending on the overall formulation type (e.g., emulsion, serum). This is often during or after the main mixing phase, ensuring proper dispersion. However, for the most precise instruction, it is best to refer to the specific technical data sheet for Reservoir-tech.
• Controlled release for oil-soluble actives: Based on your description of the website's content, it appears correct that Reservoir-tech can help control the release of both water-soluble substances (like Lactic Acid) and oil-soluble substances (like Sym White, Activated Resorcinol).