Cream Formula with Penetration Enhancer and Witch Hazel Question

Question

Based on the provided cream formula suggestion including PE-1 Aqua, Tranexamic Acid, Alpha Arbutin, Pep Coll, n-acetyl glucosamine (GlucoBright), Safe B3, Phenoxyethanol SA, Light Cream Maker, and water, I would like to know: How to properly mix the water and oil phases to create the cream texture as described? If I add Witch Hazel to this formula, will I still need to add a separate preservative, or is the preservative in Witch Hazel sufficient?

MySkinRecipes Expert · Accepted Answer

Regarding the formula you provided and your question about adding Witch Hazel:

The staff has reviewed your formula and provided recommendations.

They suggest adding PE-1 Aqua at 3% to help improve the penetration of the ingredients into the skin.

The recommended formula structure is divided into two phases:

Water Phase:

Tranexamic Acid 3%
Alpha Arbutin 2%
Pep Coll 3%
n-acetyl glucosamine (GlucoBright) 4%
Safe B3 5%
Phenoxyethanol SA 1% (Preservative)
Water (remaining part, approx. 78%)

Oil Phase:

PE-1 Aqua 3%
Light Cream Maker 1%

Mixing Instructions:
Mix the ingredients for the water phase together and the ingredients for the oil phase together separately. Then, divide the water phase into approximately 5-10 equal portions. Add the water phase portions to the oil phase one portion at a time, stirring until fully combined before adding the next portion. Continue until all the water phase has been added to create the cream texture.

Adding Witch Hazel:
If you wish to add Witch Hazel to this formula, you will still need to include a separate preservative (like the recommended Phenoxyethanol SA). The preservative already present in Witch Hazel is generally only sufficient if the Witch Hazel is used to replace all of the water in the formula.