Can I use this collagen serum together with other active skincare products like retinol or vitamin C?

This serum contains soluble collagen, panthenol, and allantoin, which are generally well-tolerated and focused on hydration and calming the skin. However, if you are using strong active ingredients such as retinol, high-concentration vitamin C, or chemical exfoliants (AHAs/BHAs), you should introduce this serum gradually into your routine. The source notes that if your skin is very reactive, you should avoid overwhelming it. A practical approach is to use this serum on nights when you are not using your strongest actives, or to apply it in the morning while reserving potent treatments for the evening. Always keep the rest of your regimen simple when combining products. If you notice any stinging, redness, or increased sensitivity, pause the other active products and focus on the soothing properties of the allantoin and panthenol in this serum until your skin barrier recovers. Consult a specialist if you have chronic skin conditions or are on medication.