Vitamin C and Water
Question
I want to mix Vitamin C powder (specifically L-Ascorbic Acid) with water to apply to my face and body. Can this mixture be absorbed by the skin, and how long can I keep it before it loses effectiveness due to oxidation? What is the maximum concentration I should use, and how should I store it?
Answer
Subject: Vitamin C and Water
Hello,
Regarding your question about mixing Vitamin C with water for skin application on your face and body:
Yes, you can mix Vitamin C powder with water for application. However, it's important to know that Vitamin C (specifically L-Ascorbic Acid) is highly unstable, especially when dissolved in water. It oxidizes quickly when exposed to light, air, and heat, losing its effectiveness.
- Absorption: Your skin can absorb Vitamin C directly. While some ingredients like ethoxydiglycol can potentially enhance absorption, a simple water mixture will still allow for some absorption. Be aware that some absorption enhancers might increase the risk of skin irritation.
- Usage within 2-3 days: Using the mixture within 2-3 days is a good approach because of its instability. It helps minimize the time it has to oxidize.
- Checking for Oxidation: As the staff mentioned, check the color of the solution. If it turns yellow, it indicates that the Vitamin C has oxidized and lost its potency. You should discard it.
- Storage: To help slow down oxidation, store the mixture in the refrigerator and keep it away from light.
- Concentration: Remember not to use Vitamin C at a concentration exceeding 15%.
In summary, while a simple water mixture is possible and can be absorbed, it's very unstable. Using it quickly and storing it properly are key to getting some benefit before it degrades.