Serum Formulation Questions and Usage

Based on the formula you provided and the feedback from the community and staff:

1. Can this formula be mixed? Yes, this formula can be mixed.
2. Can this formula be applied during the day? Yes, it can be used during the day.
3. Can this formula be applied daily? Yes, it can be applied daily.
4. Is this formula suitable for a leave-on serum? Yes, it is suitable for general skin care as a leave-on serum. However, if you have very dry skin, it is recommended to follow up with a cream containing wax or oil.

Important Considerations:

• pH Level: Due to the presence of Lactobionic Acid, please check the pH of the formula. If the pH is below 3, it is recommended to adjust it upwards using a mild base or reduce the concentration of Lactobionic Acid to avoid potential skin irritation.
• Preservative Sensitivity: If you have sensitivity to Phenoxyethanol, you may consider using an alternative preservative.
• Texture: If the serum feels sticky or tacky, you could consider adding an ingredient like Water Soft (PEG/PPG-17/6 Copolymer) to improve the texture and feel.