The short answer: a reliable DIY cannabis bath bomb recipe is roughly two parts baking soda to one part citric acid, held together with a little cornstarch, Epsom salt, and an infused oil binder. Get that ratio right, keep every ingredient bone dry, and dose the cannabis oil by weight rather than by eye. This guide covers the formula, the infusion step, and the fixes for the problems that ruin most first batches.

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Key Features

Materials and Specs

You will need food-grade citric acid, fine-milled baking soda, Epsom salt, cornstarch, and a carrier oil infused with decarboxylated cannabis. Coconut oil and MCT oil both work well because they stay liquid at room temperature once blended; a small amount of polysorbate 80 helps the oil disperse instead of slicking the tub. Weigh everything on a 0.01-gram scale, wear gloves, and work in a dry room, since a single drop of water will start the fizz early. Standard 2.5-inch molds hold about 60 to 70 grams of packed mixture, and the guide lists fill lines for smaller shapes.

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Shipping and Returns

Orders ship in discreet, odor-controlled packaging, usually within one to two business days, with tracking sent as soon as the label is created. Unopened accessories and supplies can be returned within 30 days in original condition; anything opened or used is final sale for hygiene reasons. Reach out to support if a package arrives damaged and a replacement will be arranged.

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How much cannabis oil goes into one bath bomb?

Most makers use 5 to 10 milligrams of infused oil per standard bomb, weighed individually so the batch stays uniform. Start low and label each mold with its dose so you can adjust next time.

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Do cannabis bath bombs get you high?

Generally no. THC absorbs poorly through intact skin, so a bath bomb is a topical experience rather than an edible one, and it should still be kept away from children and pets.

Why did my bath bombs crack or fizz early?

Almost always moisture. Humid air, damp hands, or wet molds activate the citric acid and baking soda early, so seal the finished bombs airtight and let them cure before storing.