Eye Cream Formulation Review and Ingredient Information

Thank you for sharing your eye cream formulation and questions. Let's review your recipe and discuss the ingredients.

Your Eye Cream Formulation (50ml)

Your calculation for a 50ml batch based on the percentages provided appears correct:

• Water: 66% = 33ml
• Eyeseryl®: 10% = 5g
• Haloxyl®: 3% = 1.5g
• SNAP-8®: 10% = 5g
• Centella Asiatica (Gotu Kola) Extract: 5% = 2.5g
• Vitamin E (Tocopheryl Acetate): 5% = 2.5g
• Light Cream Maker™: 1% = 0.5g
• Total: 100% = 50g (assuming density close to 1g/ml)

Mixing Instructions

The mixing method you described, based on the previous staff reply, is the correct approach for this formulation:

1. Combine Water, Eyeseryl®, Haloxyl®, SNAP-8®, and Centella Asiatica Extract (Mixture A). Stir until dissolved.
2. Combine Vitamin E (Tocopheryl Acetate) and Light Cream Maker™ (Mixture B).
3. Slowly add Mixture B to Mixture A while continuously stirring until a uniform cream texture is formed. Ensure thorough mixing for a smooth result.

Vitamin C Comparison: MAP vs. Ethyl Ascorbic Acid

You asked about the efficacy and stability of Magnesium Ascorbyl Phosphate (MAP) and Ethyl Ascorbic Acid.

• Both Magnesium Ascorbyl Phosphate (MAP) and Ethyl Ascorbic Acid are stable derivatives of Vitamin C.
• Ethyl Ascorbic Acid is a newer form that is highly stable and water-soluble, working well in formulas with a pH of 3.5-6.0. It is suggested to help brighten skin and reduce existing dark spots.
• Magnesium Ascorbyl Phosphate (MAP) is also highly stable and water-soluble but requires a more alkaline pH range of 7-9 for optimal stability. It is also effective for skin brightening.
• Based on available information, initial studies suggest Ethyl Ascorbic Acid may potentially have better efficacy than MAP, although both are considered moderately effective for whitening compared to other Vitamin C forms. Stability is not a major differentiating factor between these two, as both are highly stable. The choice between them might depend more on the desired pH of your final formulation and specific formulation goals.

Alpha Arbutin Concentration

Regarding Alpha Arbutin concentration, while individual skin tolerance varies, there are recommended usage rates to ensure both efficacy and safety in cosmetic formulations. The idea that you can use "as much as you want" if you don't experience allergic reactions is not a standard formulation guideline.

For Alpha Arbutin, the product description recommends a usage rate of 0.2-2% for skin brightening, explicitly stating not to use more than 2.00%. Using concentrations significantly higher than the recommended maximum, such as 7%, is generally not advised as it may not provide additional benefits and could potentially increase the risk of irritation or instability without proven enhanced efficacy. It is best to adhere to the recommended usage rates provided for the ingredient.

Your formulation appears well-structured for an eye cream targeting wrinkles, puffiness, and dark circles using ingredients like Eyeseryl®, Haloxyl®, SNAP-8®, Centella Asiatica, Vitamin E, and Light Cream Maker™.