Review of Proposed Formulation

Thank you for sharing your proposed formulation. I have reviewed the list of ingredients and their percentages, which sum up to 100%.

This formulation includes a variety of active ingredients targeting multiple skin concerns such as whitening, anti-aging, hydration, and barrier repair.

However, formulating a product with this many active ingredients at relatively high concentrations is complex. It requires careful consideration of:

• Ingredient compatibility and potential interactions.
• Solubility and stability of each ingredient within the final product.
• Optimal pH for the efficacy and stability of all actives (e.g., Azelaic Acid, Niacinamide, ALA, Peptides).
• Potential for skin irritation or sensitization due to the high concentration of multiple potent ingredients.

Regarding your question about this serum being the only product a customer needs:

• While this serum is comprehensive, it is unlikely to be sufficient as a complete standalone skincare routine.
• A full skincare routine typically includes cleansing, moisturizing, and crucially, sun protection.
• This formulation lacks UV protection, which is essential, especially when using ingredients like Azelaic Acid, Deoxyarbutin, and ALA that can increase skin sensitivity to the sun.
• Depending on the customer's skin type, additional moisturizing might be needed beyond what the serum provides.

In summary, while the formulation is interesting and targets many concerns, its feasibility and stability need thorough testing. It would likely function best as a powerful serum within a routine, rather than replacing the entire routine.

It is highly recommended to consult with a professional cosmetic formulator for detailed guidance on manufacturing, stability testing, safety assessment, and usage recommendations.