When to Use Vitamin C Serum Day or Night?
When to Use Vitamin C Serum: Day or Night? Spoiler alert: It’s not a vampire—it’s sunlight-loving! Let’s break down the when, why, and how of this skincare superstar. When to Use Vitamin C Serum Day or Night? Vitamin C serum is the Swiss Army knife of skin care—it does a little of everything. Lightens skin?…