Suitable Product Texture

Considering the properties of the active ingredients you've chosen:

• Many ingredients like 4D Hyaluronic Acid, Calendula Extract, Rice Vitamin, Allantoin, Panthenol, Rhamnose, and Licorice Extract are water-soluble.
• Ingredients crucial for skin barrier repair such as Ceramide 2, Phospholipid, Cholesterol, Natural Bisabolol, and Phytosphingosine are oil-soluble or require dispersion in both water and oil phases.

To effectively incorporate both water-soluble and oil-soluble components, an emulsion-based product is most suitable. This means a texture like a lotion or a cream would work well.

• Lotion: Generally lighter and less oily, suitable for skin prone to acne while still providing hydration and barrier support.
• Cream: Provides a richer texture, which can be beneficial for strengthening the skin barrier, especially if the skin is also dry or compromised.

An emulsion serum is also a possibility, offering a lighter feel than a traditional cream or lotion while still allowing for the inclusion of both types of ingredients. A simple gel texture would be challenging as it cannot effectively incorporate the oil-soluble components.

Submitting a Formula to R&D

If you wish to submit a formula to R&D and have them select the appropriate solvent, you would typically need to provide them with:

1. List of Active Ingredients: Clearly list all the active ingredients you intend to use, including their desired concentrations if you have them.
2. Product Goals: Specify the primary goals of the product (e.g., reduce acne, strengthen skin barrier, moisturize).
3. Desired Product Texture: Indicate your preferred texture (e.g., light lotion, richer cream, serum).
4. Target Audience/Skin Type: Mention the intended users (e.g., oily acne-prone skin, sensitive skin, dry skin).
5. Any Specific Requirements: Include any other considerations, such as desired feel on the skin, natural vs. synthetic preferences, or specific certifications.

The R&D team would then use this information to:

• Assess the compatibility and solubility of your chosen active ingredients.
• Select appropriate solvents, emulsifiers, and base ingredients to create a stable and effective formulation that achieves your product goals and desired texture.
• Develop a prototype formula for your review.

You would need to contact the R&D service provider directly to discuss their specific process for formula development and ingredient selection.