THC Bath Bomb DIY: A Step-By-Step Guide

What’s better than stepping into a warm bath to unwind after a busy day with a few candles and a good book? Doing it with a THC bath bomb (preferably one that’s handmade) of course! If you’re thinking a THC bath bomb DIY project is too much to handle, pack yourself a bowl, take a rip, and stop worrying! It’s actually super easy to make bath bombs at home, especially if you already have cannaoil on hand and they’ll soon be your go-to bath product that you can’t live without. When making THC bath bombs at home, you can tailor each one to fit your preferred fizziness, color, scent, and potency for ultimate relaxation. These little soothing morsels also make the perfect handmade gift for anyone who loves cannabis and a good soak. Trust us, they’ll be dying to get the recipe from you so they can make some themselves. In this article, we’re breaking down exactly how to make THC bath bombs step by step and all the materials you’ll need to do it.

What are THC bath bombs?

Bath bombs were first invented way back in 1989 by the co-founder of Lush Cosmetics, Mo Constantine to elevate the bath time ritual. These little compact morsels are dropped into the bathtub, fizzing and melting away in the warm water, releasing soothing aromatherapy scents, beautifully colored water, oils for moisturized skin, and epsom salt to ease aches and pains. As the name suggests, THC bath bombs have an extra ingredient, tetrahydrocannabinol (THC), a psychoactive compound produced naturally by marijuana plants. This is typically added in the form of THC infused oil, such as coconut or olive oil, which can be made pretty easily at home or purchased pre-made at a dispensary. There are also CBD bath bombs, which offer the same relaxing effects without the psychoactive properties. Most cannabis enthusiasts like to mix the two compounds together for a more beneficial, full-spectrum experience. When making your own THC bath bombs, you’re in full control over what goes into the recipe and can mix THC and CBD oils, tweak the potency levels, or eliminate any ingredients you may be allergic to.

What strains are good for THC bath bombs?

Any cannabis strain can be used to create cannaoil and used in our THC bath bomb recipe. However, since most people use bath time to unwind, we suggest trying a less energetic, more relaxing strain that’s good for the evenings when cooking up cannaoil from scratch. Indica-dominant strains like Ice Cream Cake, Death Star, Zkittles, Chemdawg, Yoda OG, or Nightcap are perfect options for a more sedative experience that will loosen up those knots in your shoulders and melt away any stress and anxiety from the day. Whenever making cannaoil, always figure out the approximate potency of the final product and write it on the container so you don’t forget. For example, a ½ cup of oil infused with 3.5 grams of dry herb will yield roughly 23 teaspoons of THC cannaoil. You’ll need to know the potency (the percentage of THC) of the specific strain you’re using to calculate the strength of a single teaspoon of cannaoil so you don’t go overboard when creating various recipes. For those that failed math class in high school, there are online potency calculators that will make the calculation for you.

How to make THC bath bombs

How to make THC bath bombs

If you already have a stash of cannaoil at home, this THC bath bomb DIY project will be a fun, quick, afternoon activity. Feel free to be as creative as you want with non-traditional bath bomb mold shapes or cookie cutters, an explosion of bright colors, a unique mix of essential oils for a personalized aromatherapy scent, or a mixture of CBD and THC cannaoils for a wholesome and relaxing bathtime experience. Besides the cannaoil, all of the ingredients can be found at your local grocery store, even the citric acid (sometimes called sour salts), which is usually in the canning section or sometimes in the spice aisle. Citric acid is a key ingredient in any bath bomb since it gives off the iconic fizz when it hits liquids. If you plan on making lots of THC infused products like edibles, tinctures, lotions, or bath bombs, it’s worth it to invest in a cannabis infusing machine to speed up the process. Most people make large batches of cannaoil or cannabutter since it stores so well and is extremely versatile. Now that you know the basics, let’s get to it! Collect the following materials and follow our step-by-step guide on how to make THC bath bombs below:


  • Large mixing bowl
  • Small mixing bowl
  • Mixing spoon
  • Measuring cups and measuring spoons
  • Whisk
  • Rubber spatula
  • Bath bomb molds or large cookie cutters (you can also mold shapes and designs by hand)


  • 3 tbsp cannaoil (adjust to preferred potency)
  • 1 tbsp coconut oil (warmed until it’s a liquid) or olive oil
  • 1 cup baking soda
  • ½ cup citric acid
  • ½ cup epsom salt
  • ½ cup cornstarch
  • 1 tsp water
  • Optional: 2 tsp essential oils (mix together your favorite aromatherapy combinations. Some of the most popular are lavender, orange, bergamot, rose, jasmine, lemongrass, sandalwood, ginger, tea tree, peppermint, and eucalyptus.)
  • Optional: 1–2 drops food coloring or mica color powder (purely if you want to have some color in the bath bomb and water)

Step-by-step guide: THC bath bomb DIY

  1. Begin by combining the dry ingredients in a large bowl and whisk together. Do not add any coloring agents (food coloring or mica color powder) just yet.
  2. In a small bowl, combine the CBD or THC cannaoil, warmed coconut oil, your favorite blend of essential oils, and water. Mix it up with the whisk or spoon.
  3. Time to test your patience. Very, very, slowly, start to incorporate the liquid mixture into the bowl with the dry ingredients. It’s crucial to just add a splash of liquid at a time and mix it up before adding more. The citric acid in the dry mixture will start to fizz just a little bit, but if it fizzes a lot, you’re adding the liquid too fast and the bath bombs won’t fizz when they hit the bath water.
  4. Add in the food coloring and mix. You can also wait until all the liquids are incorporated and separate the combined mixture into different smaller bowls if using more than one color.
  5. Test the consistency and moisture level of the THC bath bomb mixture. It should resemble damp sand and keep its form when squeezed or formed into balls. If it’s too dry and falls apart, add a splash of water at a time and mix until the correct consistency is reached. If using mica color powder, now’s the time to add it.
  6. Fill up the bath bomb molds or roll out the mixture on a flat surface and cut out shapes using the cookie cutters. You can also mold shapes and create designs by hand or roll out a log and cut it into individual bath bombs.
  7. Place the bath bombs on the counter to dry out overnight or for at least for a few hours. Some people let them sit out for several days until they’re firm. THC bath bombs crumble super easily. If this happens when removing them from the molds, you can always remold them or remix a broken bath bomb if needed. There’s no need to start from scratch.
  8. Don’t keep your bath bombs in the bathroom! It’s too humid and damp there. Always store any unused THC bath bombs in an airtight container somewhere that’s cool and dry.

Will THC bath bombs get you high?

Will THC bath bombs get you high?

THC bath bombs won’t get you high in the usual sense that most smokers are used to and any effects will be much more subtle. Those that enjoy THC bath bombs compare the effects to a subtle “body high” with just a little bit of a “cerebral high,” also called a “head high.” It’s not remotely as powerful and potent as smoking a joint or taking a bong rip since absorption through the skin is a much less effective way to consume THC. Expect the effects to creep up slowly and feel like your mind is calm and your body is completely relaxed. Any stress will melt away and you may experience slight couch lock, which just means you won’t want to get up from where you are. Edibles and indica dry herb strains also produce this effect, though much stronger than what you’ll get from a bath bomb. Some people also describe the effects as being similar to having a glass or two of red wine after a long day. You’re not tipsy or drunk, but you definitely feel more at ease, calm, happier, and less uptight than before. It’s the little things in life, am I right? After tossing in a THC bath bomb, let it dissolve and soak in the water for at least 20 minutes to allow your body to absorb as many cannabinoids as possible and reap the most benefits.

What are the benefits of THC bath bombs?

Taking a bath is an amazing way to relax, practice self care, or just end the day on a positive note. The addition of THC bath bombs to your ritual takes relaxation to new heights. As noted previously, THC bath bombs are a great way to unwind even further, especially if combined with essential oils and epsom salts for a complete experience that will put you in the right mindset. THC bath bombs are said to help boost your mood, unwind and relax, ease achey muscles, reduce stress and anxiety, and help prepare you for a good night’s rest. You’ll get everything a normal bath bomb has like skin moisturization and aromatherapy, plus a subtle body high with slight mental effects. If you’re in search of a more potent bath time experience, nibble on an edible before getting into the tub or take a few hits of your favorite calming strain to really set your mind at ease.

Can THC bath bombs influence my drug test at work?

Any form of THC consumed, smoked, or absorbed through the skin has the possibility of showing up on drug tests for marijuana. The skin absorbs such small amounts of THC from the bath bombs that it’s unlikely to trigger a positive result if used infrequently and the person doesn’t use any other cannabis products, however it is still a risk. Unlike other types of tests, marijuana drug tests only show a positive or negative result if the person has used THC products in the past, not current intoxication or the levels of THC in the body. THC sticks to the body’s fat cells, which makes it harder to eliminate from the body completely. To speed up the process, try a detox drink combined with a detox shampoo. Employer drug tests do not screen for CBD, which is federally legal if derived from legal hemp plants, however be sure that your CBD products don’t contain any THC. Full-spectrum CBD products, for example, still contain trace amounts of THC which could potentially trigger a positive result on a drug test.

Ready to get started on your THC bath bomb DIY project? Don’t forget to stock up on a few smoking essentials to get the most out of bath time. Here at the Puff Puff Pass It online smoke shop we’ve got a great selection of cool bongs, dab rigs, glass pipes, vaporizers, dab pens, rolling trays, blunt wraps, herb grinders, and more!