Ingredients and pH Adjustment of Stabilized Vitamin C Serum
Question
What are the ingredients of Stabilized Vitamin C (Natural-C Glycol™) Serum and how can its pH be adjusted to 3.5 for cosmetic product formulation?
Answer
Ingredients of Stabilized Vitamin C (Natural-C Glycol™) Serum
The ingredients for Stabilized Vitamin C (Natural-C Glycol™) Serum are:
- Butylene Glycol
- L-Ascorbic Acid
- Ethoxydiglycol
- Phenoxyethanol (0.7%)
Regarding pH Adjustment to 3.5
The product description states that Stabilized Vitamin C (Natural-C Glycol™) Serum has a pH in the range of 2-3. While FDA regulations for ready-made cosmetic products require a pH of at least 3.5, the description also strongly advises against mixing any additional ingredients or modifying the product (except for adding perfume or coloring up to 1%) as it may affect the stability of the vitamin C. It is recommended to contact the company's R&D team if you wish to mix additional ingredients or make modifications, as the company cannot guarantee stability otherwise.
