Concept render · 4 fl oz castor oil refill

Renders are concepts — final packaging in development. Photography slots will be replaced with real product images.

Greymill Essentials

Cold-Pressed Castor Oil Refill

Name: Cold-Pressed Castor Oil Refill 4 fl oz
Brand: Greymill

Fills the 2 oz roll-on twice

Price announced at launchComing soon

A convenient refill format designed to help you continue your self-care routine.

Cold-pressed castor oil
Amber glass bottle
Tops up the 2 oz roll-on

Notify me at launch

One email when it’s available. Nothing else unless you join the list.

For external cosmetic use. Patch test before first use. Avoid contact with eyes.

A convenient refill format designed to help you continue your self-care routine.

Castor plant with star-shaped serrated leaves and spiky green seed capsules in afternoon light

The ingredient

A rich botanical oil, cold-pressed.

Castor oil comes from the seeds of the castor plant, Ricinus communis. Cold pressing extracts the oil mechanically, without added heat. It is naturally thick and rich in texture — which is exactly why a precise applicator makes it easier to use.

Ingredients & sourcing

How to refill

Keep the bottle. Top it up.

Draft — confirm with final packaging

01OpenRemove the cap and lift out the roller fitting.
02PourFill slowly from a 4 oz or 8 oz refill, leaving a little space at the top.
03RefitPress the roller fitting firmly back into place.
04WipeClean the bottle and roller before your next use.