Do I still need to apply moisturizer after the serum?
It depends on how dry your skin is. Generally our serum will hydrate, moisturize and protect your skin. For but some with extra dry skin, you might find our serum not enough to give you the added moisturizing. We recommend that you try a few nights without any additional cream and moisturizer. If after, you still find your skin a little dry, then proceed to put moisturizer and/or day/night cream.
How long can the serum last?
If used twice daily, it should last for 1 up to 1.5 months.
Can I apply the serum apply using the collagen mask?
No you don't need to apply any serum or moisturizer after using Taut Collagen Mask.