I wish to use
Vitamin C serum during day. I'll apply it on early morning. I'll also be wearing an Sunscreen. And I need to wash my face for reapplication of Sunscreen every 2 hours.
So my question is that does washing off my face after 3-4 hours of Serum application won't interefere with the efficacy of the Serum? Do I need to go without washing off my face for the entire day for Vitamin C serum to work effectively?