Retin A & Vitamin C simultaneously? Will this cancel out the Retin A & make it ineffective?

When using Retin-A (tretinoin) and vitamin C products together, it is important to consider the formulation and timing to maximize their effectiveness. Retin-A is a topical retinoid that works best at a certain pH level, while vitamin C (ascorbic acid) is also pH-sensitive and typically requires a low pH to be effective.

Applying these two products simultaneously might potentially reduce the effectiveness of one or both due to their differing pH requirements. However, this interaction largely depends on the specific formulations and concentrations used, which can vary widely among products. Since the Hawaiian Tropic Aftersun does not list the percentage of vitamin C, it is difficult to determine the exact impact on the Retin-A.

To minimize any potential interaction, consider applying vitamin C in the morning and Retin-A at night. This approach allows each product to work optimally without interfering with the other. Additionally, always follow with sunscreen during the day, as both Retin-A and vitamin C can increase your skin's sensitivity to the sun.

If you have specific concerns or are not seeing the desired results, it may be beneficial to consult with a dermatologist who can provide personalized advice based on your skin type and the products you are using.