Does 63% mean that the serum contains 63% pure vitamin C?

No. The 63% figure refers to Hippophae Rhamnoides Water. The renewed formula also contains 3-O-Ethyl Ascorbic Acid and Ascorbic Acid, but their individual concentrations have not been published.

What does the serum feel like on the skin?

It has a lightweight, fast-absorbing and non-greasy texture that leaves skin feeling hydrated and comfortable.

Where does this serum fit in a skincare routine?

Apply it after cleansing and toning, once your skin is completely dry. Apply a few drops evenly over your face, pat until absorbed, then follow with moisturizer.

Can it be used in the morning and at night?

Yes. You can use it in the morning or evening. When applying it during the day, finish with sunscreen.

How often should a first-time vitamin C user apply it?

If you're new to vitamin C, begin every other day and gradually increase use according to your skin's comfort.

Is this serum marketed as suitable for sensitive skin?

Yes. Retailers position it as suitable for sensitive skin and describe it as gentle and skin-friendly. New vitamin C users are directed to begin every other day and increase gradually according to skin comfort.