Formula Review

Here is a review of your proposed day and night cream formulas:

Day Cream Formula

• Ingredients and Concentrations: The ingredients and their percentages are generally within recommended usage rates.
• Compatibility:
  • Sym-White (Phenylethyl Resorcinol) at 0.5% is an effective whitening agent. It requires an oil phase in the formula, which is provided by the Mineral Oil.
  • Satin Cream Maker is a suitable emulsifier for this formula, capable of handling the 5% oil content.
  • Natto Gum provides moisture and gentle whitening support.
  • Phenoxyethanol is included as a preservative at a standard rate.
• Important Consideration: For optimal stability and effectiveness of Sym-White, the final pH of the cream should be adjusted to the range of 4-5. While Satin Cream Maker works across a wide pH range, the active ingredients have specific pH requirements for stability.

Night Cream Formula

• Ingredients and Concentrations: The concentrations of Tranexamic Acid (3%), Mineral Oil (5%), Vitamin B3 (5%), GlucoBright (4%), Satin Mousse (1%), and Phenoxyethanol (1%) are within typical or recommended ranges for cosmetic use.
• Compatibility:
  • Tranexamic Acid is included at the maximum cosmetic concentration for its brightening and anti-blemish effects.
  • The combination of Vitamin B3 (Niacinamide) and GlucoBright (Acetyl Glucosamine) is well-supported by research for synergistic whitening and skin barrier improvement.
  • Satin Cream Maker is suitable for emulsifying the oil phase.
  • Phenoxyethanol provides preservation.
• Important Consideration: To enhance the long-term stability of Tranexamic Acid in the formula, it is recommended to include ActiveProtec OX at 0.5%.

Sym-White vs. Alpha Arbutin for Whitening

Based on the information available, Sym-White (Phenylethyl Resorcinol) is indicated as being highly effective for skin brightening and reducing hyperpigmentation. Research suggests it has potent tyrosinase inhibiting activity and can be significantly more effective than substances like Kojic Acid in experimental settings. Alpha Arbutin is also a widely used and effective whitening agent, considered safe and efficient. While both are good options, the data provided suggests Sym-White may offer superior whitening efficacy compared to Alpha Arbutin.