Regarding L-Ascorbic Acid in Testers

Thank you for your question regarding the availability of L-Ascorbic Acid for testers. As mentioned in the previous reply, L-Ascorbic Acid, which is a pure form of Vitamin C, has a significant limitation: it is highly unstable when mixed directly with water. Oxidation occurs easily, causing the ingredient to degrade and lose its effectiveness quickly.

For this reason, L-Ascorbic Acid is generally not suitable for simple water-based formulations or testers where stability over time is required without complex formulation techniques or anhydrous (water-free) bases.

However, there are several stable derivatives of Vitamin C that are suitable for use in water-based cosmetic formulations. These alternatives offer similar skin benefits, such as brightening, anti-aging, and antioxidant properties, but are much easier to work with and maintain stability in a formula. Some examples include:

• Ethyl Ascorbic Acid: A highly stable, water-soluble derivative that provides excellent skin brightening effects.
• Ascorbyl Glucoside (AA-2G): Another stable, water-soluble form that is easily absorbed by the skin and offers whitening and antioxidant benefits.
• Sodium Ascorbyl Phosphate (SAP): A stable, water-soluble form often used for its brightening properties.

We also offer ready-made bases containing stable forms of Vitamin C, such as:

• 16% Vitamin C Brightening Serum
• Ascorbyl Glucoside 20% Gel

These stable forms and ready-made bases are excellent options if you are looking to create a Vitamin C product that is stable and effective in a water-based format.

If you are interested in using pure L-Ascorbic Acid, it is typically used in anhydrous formulations (without water) or requires specific pH control and stabilizers to maintain its potency.