Frequently Asked Questions

Everything you need to know about NATANNA STEM C-20.

What type of vitamin C does STEM C-20 use?

STEM C-20 is formulated with Sodium Ascorbyl Phosphate (SAP), a stable form of vitamin C.

Is STEM C-20 suitable for sensitive skin?

STEM C-20 was formulated with sensitive skin in mind. We recommend patch testing before your first full application.

How do I use STEM C-20?

Apply a few drops to clean, dry skin. Smooth over the face and neck before moisturizer.

Can I use STEM C-20 in the morning and at night?

Yes. STEM C-20 can be used in the morning or evening. Apply sunscreen during the day.

Can I use it with other skincare products?

It can be incorporated into most skincare routines. Consult your dermatologist when combining it with prescription treatments or strong active ingredients.

Where can I purchase STEM C-20?

STEM C-20 is available through our official Amazon store.