Dropper vs. Pump: Why Delivery Method Matters for Active Ingredients

Most peptide serums come in a dropper bottle. Ours doesn't, and that's intentional.

The Problem With Droppers

Every time a dropper bottle is opened, the formula inside is exposed to air. For sensitive actives like copper peptides, repeated air exposure can lead to oxidation over time, which may reduce how effective the product is by the time you reach the bottom of the bottle.

Why We Chose an Airless Pump

Radova's Copper Peptide Repair Serum uses an airless pump instead. This design seals the formula between uses, limiting exposure to air and light. The goal is simple: the serum you apply on day thirty should be just as potent as the serum you applied on day one.

Other Benefits of a Pump

Beyond protecting the formula, a pump also gives you more consistent dosing. Instead of guessing how many drops equal the right amount, a pump delivers a controlled amount with each press, making it easier to build a consistent routine.

What This Means for You

If you've used a peptide serum before and felt like it stopped working partway through the bottle, oxidation from a dropper may have been part of the reason. Choosing a formula with airless delivery is one simple way to help your actives stay effective for the life of the bottle.

Ready to try it? Shop the Copper Peptide Repair Serum →