Whitening Serum Formulation: Texture, Penetration Enhancer, pH, and New Ingredient Availability

Question

I have a whitening serum formulation containing both water-soluble and oil-soluble ingredients. I would like to inquire about the following:

What is the expected texture (will it be clear or cloudy)?
Is PE-1 Aqua suitable as a penetration enhancer in this formula, given that it contains oil-soluble ingredients?
Is pH adjustment necessary for this formulation?

Additionally, please inform me when the new penetration enhancer that works with oil-soluble ingredients is available.

MySkinRecipes Expert · Accepted Answer

Hello,

Regarding the whitening serum formulation you inquired about, the staff has already provided information. Here is a summary:

Serum Texture: The texture will be white and cloudy because it contains oil-soluble and water-soluble ingredients that are emulsified together. It cannot be made into a clear texture.
Penetration Enhancer: This formula is not suitable for using PE-1 Aqua because it contains oil-soluble ingredients. The company is importing a new penetration enhancer that can also be used with oil-soluble ingredients, which can be used together with PE-1 Aqua to increase effectiveness. However, the staff believes this formula already has reasonably good absorption.
pH Adjustment: pH adjustment is not necessary.

Additionally, the staff provided instructions on the mixing procedure.

Noted regarding your request to be informed when the new penetration enhancer for oil-soluble ingredients is available. We will inform you accordingly.