Medicube - EGF NAD Firming Serum - 30ml

Yes, but it is recommended to stagger usage (e.g., using this in the morning and actives at night) if you have sensitive skin.

With daily use, a 30ml bottle typically lasts approximately 4 to 6 weeks depending on the amount dispensed.

Yes, the formula is generally suitable for all adult skin types, though those with specific allergies should review the ingredient list first.

While not strictly required, storing in a cool, dark place is sufficient to maintain efficacy.

Skin improvement is a gradual process; most users report feeling increased smoothness within 2-4 weeks and visible firming after 8-12 weeks of consistent use.

Reduce the amount of product used per application and allow 60 seconds for it to fully absorb before applying the next step.

Pause use for 2-3 days to let the skin barrier recover, then resume by applying every other day to build tolerance.