Review of Vitamin C Serum Formula and Lab Testing Inquiry

Question

I am submitting my Vitamin C serum formula for review. The formula is designed for individuals aged 35 and above, aiming to address skin concerns including:

Brightening
Reducing dark spots, melasma, and freckles
Minimizing wrinkles
Controlling oiliness
Providing moisture

The ingredients included are:

Aloe Vera Extract
L-ascorbic acid
Hyaluronic Acid
Allantoin
Zinc PCA
Safe-B3
Alpha Arbutin
GlucoBright

I would like to request a review of this formula. Additionally, if the formula is suitable, I would like to inquire about the process for submitting it for lab testing. What specific types of lab tests (e.g., for stability, microbial contamination, viscosity) are available or recommended?

MySkinRecipes Expert · Accepted Answer

Subject: Review of Vitamin C Serum Formula

Thank you for submitting your Vitamin C serum formula for review, targeting skin concerns for individuals aged 35 and above, including brightening, reducing dark spots/melasma/freckles, reducing wrinkles, controlling oiliness, and moisturizing.

Based on the feedback from our staff:

Ingredient Usage Rates: Please verify the recommended usage rates for each ingredient on the product page. Specifically, Aloe Vera Extract is recommended at 1-3%, and Allantoin should not exceed 0.5% of the water content (approximately 0.2-0.3% in a low-water formula).
L-Ascorbic Acid: L-ascorbic acid (Vitamin C) is not suitable for this formula as it is unstable in water. Please refer to the product details page for more information.
Hyaluronic Acid: Could you please clarify if the Hyaluronic Acid you are using is "Double Hyaluron Liquid"?
Desired Effects:
- Ingredients like Zinc PCA and Safe-B3 (Vitamin B3/Niacinamide) can help reduce facial oiliness.
- Ingredients such as Safe-B3, Alpha Arbutin, and GlucoBright can help with skin brightening.
- However, the ingredients mentioned are not expected to effectively treat melasma or freckles.

Regarding your question about lab testing:

The staff needs more specific information about the type of testing you require. Please specify what you would like the lab to test for (e.g., microbial contamination, stability, viscosity, specific ingredient concentration, etc.). Once you provide this detail, we can provide information on the process, costs, and timelines for testing.

Please review the staff's comments and adjust your formula accordingly, especially regarding the stability of L-ascorbic acid and the recommended usage rates.