Quick answer

Spray CoBoo Natural Pumping Spray directly onto the flange of your Willow 3.0 or Willow Go before you start pumping. It lubricates the skin where the flange meets your breast, which can make longer sessions more comfortable. Apply a light, even layer — you do not need to soak the flange — and reapply only if you feel friction returning.

How to apply CoBoo spray to Willow flanges

Hold the spray a few inches from the flange and mist the inner tunnel and rim, aiming for the area that will contact your breast. One or two short sprays per flange is usually enough. Wait a second before positioning the pump so the spray does not drip, then center the flange and start your session as usual. If you use a pumping bra, attach it after the spray is in place so the fabric does not wipe the lubricant away.

When the spray helps most during a pumping routine

The first few weeks of frequent pumping are when friction tends to show up, especially if you are still finding the right flange size or pumping more often than your skin is used to. A lubricated flange can also help when you switch between breasts mid-session or when you pump back-to-back without a long break. If you are already comfortable and your flange fits well, you may not need spray at every session — use it when you notice dragging, rubbing, or tenderness at the flange edge.

How much to use and how often to reapply

Start with a light mist. More spray does not equal more comfort, and excess can make the flange slippery against your breast or leave residue on your skin. If a session runs longer than usual, or if you feel the flange starting to pull, pause and add one short spray rather than a heavy layer. After pumping, wipe the flange with a damp cloth or follow your normal part-cleaning routine before the next use.

Using CoBoo spray with other Willow accessories

CoBoo spray is designed for the flange surface, so it works alongside other parts of your kit rather than replacing them. If you use Catch-All Milk Cups to collect let-down or overflow, keep the spray on the flange only and avoid spraying into the cup itself. Pairing a lubricated flange with a cup that catches extra milk can make early breastfeeding and pumping days feel less wasteful and less rushed.

What CoBoo spray does not do

This spray is a comfort and lubrication product, not a treatment for a poor latch, a damaged flange, or a pump that has lost suction. If pumping is painful even with spray, check your flange size and review your pump setup before assuming you need more lubricant. Persistent pain, cracking, or bleeding is a reason to talk with a lactation consultant or clinician rather than to keep pumping through it.

CoBoo spray FAQ

Can I use CoBoo spray with Willow Go?

Yes. The product is designed for Willow 3.0 or Willow Go flanges. Spray the flange, not the pump body or the milk collection parts. Keep the spray on the flange surface for the most direct benefit.

How often should I reapply during a session?

Reapply only if you feel friction or dragging return. A single light application at the start is enough for most sessions. More spray is not better; a light mist is the target.

Does CoBoo spray replace flange sizing?

No. Lubrication can reduce rubbing, but it will not fix a flange that is the wrong size. If you still feel pinching or pain, check your fit. Treat spray as a comfort layer, not a sizing solution.

Where does CoBoo spray fit in my pumping kit?

It sits alongside your pump and milk collection accessories. Use it on the flange, then use your usual cups or containers for milk. Add it to your setup rather than changing how your pump works.

Product facts

  • CoBoo Natural Pumping Spray: CoBoo Natural Pumping Spray is designed to lubricate your skin while you pump and is made for Willow 3.0 or Willow Go flanges. You can apply it directly to the flange before a session instead of adding a separate step to your pump setup.
  • Catch-All Milk Cups: Catch-All Milk Cups are compatible with Willow Pump systems and are designed to capture let-down or overflow during nursing. They give you a place to collect milk that would otherwise be lost, which is useful if you often spray or leak during early breastfeeding sessions.
  • Willow 360™ and Pump Anywhere Case: The Willow 360 and Pump Anywhere Case is an all-in-one breast pump that fits in your bra and uses patented no-spill technology for hands-free pumping. A wearable setup like this is what makes a pre-pump spray step practical, because you can apply it and then move around without holding the pump in place.