Nathan and Sons Toothbrush Heads and Toothbrush Handle packaging on a white background

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.”

Side close up of the Nathan and Sons Castor Oil Toothbrush Kit featuring castor oil bristles, a bamboo neck and an aluminum handle

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

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

Castor Oil Toothbrush Kit

Name: Castor Oil Toothbrush Kit
Brand: Nathan & Sons
SKU: COTB003
Price: 19.99 USD
Availability: InStock

$19.99

A low-waste, vegan alternative to heavy micro-plastic shedding toothbrushes. This kit includes three bamboo replacement heads with castor-oil–based bristles (bio-based) and a reusable aluminum handle. Each bamboo head screws securely into the handle for quick changes and a sturdy, no-wobble feel. The castor-derived bristles deliver a smooth, consistent clean with modern durability that's great for everyday brushing..

Bristle firmness level: Soft-Medium (gentle daily clean)

Why you’ll like it

Low-waste by design: Keep the aluminum handle for years; replace only the head.
Plant-derived bristles (vegan): Bio-based nylon made from castor oil seeds—lower fossil-plastic content than conventional nylon, with resilient, smooth tips.
Solid, no-wobble fit: Threaded bamboo base screws into the handle for a snug, stable brush head.
Minimal + timeless: Warm bamboo + aluminum = a bathroom kit that looks as good as it works.

Quantity:

What's Included

3 × Bamboo heads with Castor-Oil Bio-Based Nylon Bristles1 × Aluminum Handle (reusable)

Dimensions: 0.5 x 0.7 x 5 in & 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)
Handle: Aluminum (reusable)

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.

Castor Oil Toothbrush Kit

$19.99