Close-up of the Nathan and Sons Castor Oil Toothbrush Heads featuring castor oil bristles and a bamboo neck

Packaging of Nathan and Sons Toothbrush Heads featuring Pine trees

Close-up of the Nathan and Sons Castor Oil Toothbrush Kit featuring castor oil bristles, a bamboo neck, and an aluminum handle. The image includes eco-friendly certification icons reading “Sustainable Products,” “Biodegradable & Compostable,” and “100% Vegan.”

Bathroom countertop with a wooden tray holding a Nathan and Sons Castor Oil Toothbrush Kit featuring castor oil bristles, a bamboo neck and an aluminum handle; a Nathan and sons Speckled White Handmade Gum dish, and a jar of Nathan & Sons Pearl Powder Remineralizing Tooth Powder.

Close up of the Nathan and Sons Castor Oil Toothbrush Head featuring castor oil bristles and a bamboo neck with a blurred out background of a bathroom sink

Close up side view of the Nathan and Sons Castor Oil Toothbrush Head featuring castor oil bristles and a bamboo neck

Nathan and Sons Castor Oil Toothbrush Kit featuring castor oil bristles, a bamboo neck and an aluminum handle resting on a sculpted wooden holder atop a marble bathroom countertop.

Castor Oil Toothbrush Heads

Name: Castor Oil Toothbrush Heads
Brand: Nathan & Sons
SKU: COBR001
Price: 11.99 USD
Availability: InStock

$11.99

Keep your routine low-waste with this 3-pack of bamboo replacement heads featuring castor-oil–based bristles (bio-nylon, vegan).

Each head has a threaded bamboo base that screws securely into our reusable aluminum handle (handle sold separately) for a snug, no-wobble fit. The plant-derived filaments deliver a smooth, gentle clean and hold their shape with everyday use. Replace heads every 4–8 weeks (or sooner if bristles splay).

What's Included

3 × Bamboo heads with Castor-Oil Bristles

Dimensions: 0.5 x 2 x 3.2 in

Instructions

Screw a castor-bristle head into the aluminum handle. After about a month, replace the head by unscrewing and fitting a new one.

How to use:

Attach: Align and screw the head into the aluminum handle clockwise until snug. Don’t overtighten.
Soften: Before brushing, wet bristles for a few seconds to soften (natural bristles feel best when damp).
Brush: Use our Pearl Powder Tooth Scrub (or normal toothpaste). Brush for ~2 minutes with light pressure.
Replace: Swap the head every 4–8 weeks, or sooner if bristles splay, feel rough, or after an illness.

Materials & Care

Materials:

Head: Bamboo
Bristles: Castor-oil–based bio-nylon (vegan)

Care:

Rinse thoroughly, tap off excess water, and store upright in open air.
Avoid closed travel caps while wet, soaking in cups, or leaving the head in standing water.
Keep away from prolonged direct sun or high heat.
End of life: Dispose in trash; bamboo head can be composted where accepted. Keep and reuse the aluminum handle.

Shipping Information

Processes in 1-3 days. Delivery times may vary depending on the carrier.