Yes — our formula is specifically designed for twice-daily use, morning and night, as part of your regular routine.
Copper peptides are generally well tolerated, even for those with sensitive skin, since they work with your skin's existing processes rather than forcing rapid cell turnover the way stronger actives (like high-percentage retinoids) can. That said, everyone's skin is different, so we always recommend a simple patch test before adding any new product into your routine: apply a small amount to your inner arm, wait 24 hours, and check for any reaction before applying to your face.
If you're currently using other active ingredients — like prescription retinoids or strong exfoliating acids — it's worth introducing the serum gradually (every other day at first) to see how your skin responds.