Goal
Provide a stable, high-concentration vitamin C formulation that retains antioxidant activity and improves skin absorption.
Problem
Rapid degradation and instability of L-ascorbic acid in aqueous solutions, leading to loss of efficacy and limited skin penetration.
Concept Summary
The invention is a water-free, glycerin-based solution containing 10 % L-ascorbic acid (stabilized DHAA) at pH 2.7. By eliminating water and using pure vegetable glycerin as a humectant, the serum remains clear, colorless and retains >95 % of its vitamin C content for at least one year at room temperature. The low pH enhances skin penetration, while the formulation is free of emulsifiers, preservatives, colorants and fragrances.
Principles
- Stabilization of ascorbic acid by removal of water
- Use of vegetable glycerin as a non-reactive humectant matrix
- Acidic pH (~=2.7) to improve dermal absorption
Scientific Domains
Materials
- L-ascorbic acid
- Vegetable glycerin
Mechanisms of Action
- Antioxidant scavenging of free radicals
- Collagen synthesis stimulation
- Antimicrobial and antiviral activity when combined with copper/peroxide
Applications
- Topical skin care (moisturizing, anti-aging)
- Dietary vitamin C supplement
- Antimicrobial mouth rinse
Claimed Performance
Retains >95 % of its stated L-ascorbic acid concentration for a year at typical room temperature; increases skin vitamin C levels beyond those achievable by oral supplementation; provides moisturizing, collagen-stimulating and antioxidant effects.
Experimental Evidence
Stability testing showed >95 % retention after one year of storage at room temperature; user reports of improved skin texture and reduced gingivitis when used as a mouth rinse.
Limitations
- Potential tingling or irritation on sensitive skin
- Stability depends on maintaining a water-free formulation
- Limited peer-reviewed clinical data on efficacy
Red Flags
- Claims of superior absorption and antimicrobial effects are not supported by independent, peer-reviewed studies
