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How to open Foaming Spray BottleUpdated 3 days ago

TL;DR: Hold the bottle firmly and twist the head anti-clockwise, pressing down on the top as you turn. If it is stuck, five to ten minutes in the freezer or sixty to ninety seconds under warm water usually frees the seal. Then fill to the line and prime the pump.


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Koh Foaming Spray Bottle
Koh Foaming Spray Bottle in use

How do I open Foaming Spray Bottle?

Hold the bottle firmly in one hand and twist the head anti-clockwise. If it feels stiff, press down on the top as you twist to release the seal. Once it is off, fill to the line, which sits about 1 cm below the shoulder and holds exactly 300 mL. Twist the head back on firmly and prime the pump with two or three pulls until it dispenses steady foam.

✓ Step by step

1

Hold the bottle firmly and twist the head anti-clockwise.

2

If it feels stiff, press down on the top as you twist to release the seal.

3

Fill to the line from a compatible Koh refill. The mark sits about 1 cm below the shoulder, exactly 300 mL.

4

Twist the head back on firmly, then prime the pump with two or three pulls until the foam runs steadily.


What if the head is stuck?

Two methods work on a stuck foamer head. The freeze method: put the bottle in the freezer for five to ten minutes, as the cold contracts the plastic and helps loosen the head. The warm water method: run the head under warm, not hot, water for sixty to ninety seconds, as the slight expansion frees a stubborn air seal. If neither works after a couple of attempts, get in touch with the Koh UK team rather than forcing it.

⚠ Freeze method

Put the bottle in the freezer for five to ten minutes. The cold contracts the plastic and can loosen the head.

5 to 10 min freezer

⚠ Warm water method

Run the head under warm, not hot, water for sixty to ninety seconds. The slight expansion frees a stubborn air seal.

60 to 90 sec warm water

✓ Still stuck?

If neither method works after a couple of attempts, contact the Koh UK team rather than forcing the head.

Do not force it

How full should I fill it?

Fill to the marked line and no further. The bottle holds 300 mL and the air left above the line is what lets the pump aerate the formula into foam. Overfilling is one of the most common causes of a foamer that leaks or drips, and it also makes the pump harder to tighten properly.

✓ Fill to the line

Fill to the marked line only. The air above the line is what lets the pump aerate the formula into foam.

300 mL Do not overfill

✓ Leaks or drips

If the bottle leaks, check it is not overfilled and that the pump is tightened properly.

Check the fill Tighten the pump

What if it will not foam once it is filled?

Check the bottle holds a foaming formula first, because the wrong refill is the most common cause. Then twist off the head, soak it in warm water for a few minutes, reattach and pump the trigger twelve or more times to clear the nozzle. Hold the bottle upright while spraying, as extreme tilting interrupts the pump.

✓ Check the refill first

The wrong refill is the most common cause. See Which products can I use with Foaming Spray Bottle? for the full list.

Right refill first

⚠ Clear the nozzle

Twist off the head, soak it in warm water for a few minutes, reattach and pump the trigger twelve or more times.

Hold the bottle upright while spraying. Extreme tilting interrupts the pump.

Soak in warm water Pump 12+ times Hold upright

Koh Foaming Spray Bottle

Just the bottle

Pair Foaming Spray Bottle with any compatible Koh foaming formula for even, clinging coverage.

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Last reviewed: August 2026 · Koh UK

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