Ingredients for Oil-Free Concentrated Serum

Based on the ingredients you've listed, many of them are water-soluble extracts and acids commonly used in serum formulations.

Here's a breakdown of the ingredients and their suitability for an oil-free concentrated serum:

• Allium Cepa Bulb Extract, Aloe Vera Extract, Centella Asiatica Extract, Croton Lechleri Resin Extract, Ipomoea Pes-Caprae Extract, Green Tea Extract: These are typically water-soluble botanical extracts and are well-suited for an oil-free serum base.
• Tea Tree: If this refers to Tea Tree Oil, it is an oil and would not be suitable for an oil-free formulation. If it refers to a water-soluble extract form (which is less common), it could potentially be included.
• Vitamin C: Water-soluble forms of Vitamin C (like L-Ascorbic Acid or its water-soluble derivatives) are suitable. Oil-soluble forms would not be.
• AHA (Alpha Hydroxy Acids): These are water-soluble acids commonly used in serums. Suitable.
• BHA (Salicylic Acid): Salicylic Acid is oil-soluble, but it can be formulated into water-based serums using solubilizers or in specific derivative forms. It is commonly used in acne/exfoliating serums.

Conclusion:

Most of the ingredients you listed are suitable for an oil-free concentrated serum. The main considerations would be the form of "Tea Tree" (ensure it's not the oil) and the specific form of Vitamin C used (should be water-soluble). Salicylic Acid (BHA) requires careful formulation in a water base.

Overall, it seems possible to create an oil-free concentrated serum using many of these ingredients, depending on the specific forms and proper formulation techniques.

Would you like me to search for any of these ingredients in the database or look for example formulations that use some of them?