Subject: Adding actives to face massage cream

Based on the ingredients provided and the staff's reply:

1. Adding Vitamin C LAA for brightening:

   • While your cream contains Vitamin E, which helps reduce oxidation, L-Ascorbic Acid (LAA) requires specific conditions, including appropriate pH and often other antioxidants like Ferulic Acid, for stability.
   • Adding LAA directly to this pre-made formula might lead to rapid degradation.
   • The staff recommends using more stable Vitamin C derivatives instead, such as Vitamin C Ester or Perfect-C (Ascorbyl Tetraisopalmitate), which are more suitable for adding to existing formulations.

2. Adding Coenzyme Q10 for anti-aging:

   • Yes, you can add Coenzyme Q10 to this formula.
   • The presence of Cetearyl Alcohol in the ingredient list will help emulsify Coenzyme Q10 into the cream.

3. Adding Hi-EGCG for oily skin:

   • Yes, you can add Hi-EGCG (Green Tea Extract EGCG) to this formula.
   • Assuming Hi-EGCG is water-soluble, you should dissolve it in the water phase of the cream before mixing.

4. Effectiveness of actives with high oil content during massage:

   • Based on the ingredient list starting with water, this cream appears to be an oil-in-water (O/W) emulsion.
   • O/W emulsions are generally effective at delivering active ingredients into the skin. Water-soluble actives are in the outer phase and contact the skin directly, while oil-soluble actives are easily absorbed.
   • Compared to water-in-oil (W/O) emulsions (which are better for creating a barrier on the skin), O/W emulsions facilitate better penetration of water-soluble actives.
   • The long massage time (30-45 minutes) can also help improve the absorption of the active ingredients into the skin.