Compatibility and Stability of 15% Vitamin C Serum/Cream for Daytime Use

Based on the information provided:

• Using a serum or cream with 15% Vitamin C during the day is generally safe for your skin and should not cause problems.
• However, other cosmetic ingredients used alongside it might react with the Vitamin C, causing it to degrade and lose its effectiveness.
• This degradation affects the product's performance but does not harm your skin.
• It is typically recommended to use Vitamin C at a different time of day or allow a gap between applying other products to maintain its stability.
• If you plan to use it with other specific products, checking their ingredient lists can help determine potential compatibility issues.