If you've invested in high-end bioregenerative serums—think growth factors, peptides, and plant stem cells—you might be accidentally neutralizing them before they even touch your skin. Dr. Elena Voss breaks down the molecular science behind safely combining these advanced actives with vitamin C and exfoliating acids. This episode is for skincare enthusiasts ready to move beyond basic routines and learn why pH levels, molecular weights, and wait times actually matter for getting results from your products.

• Applying a low-pH vitamin C serum directly after a growth factor serum can denature the proteins you just paid for—chemistry overrides the "thinnest to thickest" rule most people follow.

• Your skin needs 15 to 20 minutes after acid application to buffer back to a safe pH range; skipping this wait time creates a n ...