10 Best Prostaglandin-Free Brow Serums (2026) | Tested

Clean eyebrow growth serum bottle with a clear spoolie applicator on a pastel vanity surface.

Finding the best eyebrow growth serums without prostaglandins used to feel nearly impossible. I spent months researching formulas after a prostaglandin-based serum left my brow area irritated and slightly discolored. Like many of you reading this, I wanted fuller, thicker brows without the risk of orbital fat loss, iris darkening, or redness that hormone-based products … Read more