a white countertop with a seafoam green sitting on top. The bowl is filled with DIY oatmeal bath soak bath bombs. A natural seafoam sponge is sitting in the background of the bowl.

DIY Colloidal Oatmeal Bath Soak

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Learn how to make this really simple, soothing DIY colloidal oatmeal bath soak.

If you stumbled onto my post about my son’s molluscum contagiosum, you’ll know that colloidal oatmeal baths have been a staple in keeping his secondary eczema in check.

a white countertop with a seafoam green sitting on top. The bowl is filled with DIY oatmeal bath soak bath bombs. A natural seafoam sponge is sitting in the background of the bowl.

Oatmeal skin products have been used for centuries to soothe irritating skin conditions, and I can see why. They work!

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What is colloidal oatmeal?

Colloidal oatmeal is just oats that have been processed into tiny particles (1/100th of a millimeter).

Manufacturers of colloidal oatmeal and colloidal oatmeal products have used special grinders to process the grains into nano particles. The grains are cooked, dried, and then processed for sale as a colloidal oatmeal instead of regular rolled oats.

a small glass jar filled almost to the top with colloidal oatmeal powder.

Why is oatmeal recommended for skin conditions?

Colloidal oatmeal has been proven beneficial for dry, damaged skin. Oats act as an emollient which provides a moisture barrier.

Oatmeal baths have the ability to reduce inflammation.

Oats contain phenols that can help absorb UV rays and reduce some damaging inflammation.

  • Colloidal oatmeal offers a soothing moisture moisture barrier for irritated skin.
  • Help control inflammation
  • Contains antioxidant properties

Skin conditions and oatmeal baths

There are so many skin conditions in which colloidal oatmeal can be beneficial. Here are a few of the conditions that they are most commonly used for:

  • Eczema or psoriasis (can be primary skin irritation or secondary from a skin condition such as molluscum contagiosum)
  • Hives
  • Sunburns
  • Acne (adults and babies)
  • Rashes from plants (poison ivy, stinging nettles)
  • Chickenpox or shingles
  • Bug bites (spiders, mosquitos)
  • Diaper rash

When both of my kids were babies, a soothing oatmeal milk bath was the first step in treating diaper rash. Thankfully we didn’t have this often as we primarily used cloth diapers. But when we needed it, it was so helpful.

Who shouldn’t use a colloidal oatmeal bath?

People with Celiacs disease should not use oatmeal bath soaks unless they are using a certified gluten free oatmeal.

What type of oats should I use for a colloidal oatmeal bath soak?

If you are making your own DIY oatmeal bath soak, use an organic steel cut oat or rolled oats.

Instant oats and oatmeal are not good options for this recipe. They are over processed and contain a lot of unhealthy chemicals and ingredients.

Ingredients in DIY oat bath

Recipe makes enough for 1 bath soak.

I make usually make enough to have 3-4 batches ready at a time and store it in a jar like this near my tub.

  • 1 cup of organic rolled oats
  • 1/2 cup baking soda
  • 5-10 drops of skin soothing essential oil (lavender, frankincense)

Essential oils are optional but I highly recommend.

Essential oils contain some really wonderful healing properties and can be nourishing and soothing for the skin.

However, if you don’t have any on hand, you can make this recipe without them.

If you grind the oats too fine, they can turn into a paste. So if you find that they are ground to fine, you can add the oats to a small cloth drawstring bag or cut the leg off a pair of tights. Making sort of a tea bag for your oat soak.

a small muslin drawstring bag sitting on a white table top. The muslin bag has a small branch of dried eucalyptus sitting onto of it. The sun is beaming in through a window from the left side.

How to make DIY colloidal oatmeal bath soak

  1. Add organic rolled oats to a coffee grinder, food processor or blender.
  2. Blend until it becomes a really fine powder.
  3. Transfer oat powder to a bowl and combine with baking soda and essential oils.
  4. Mix until incorporated.
  5. Transfer to a storage jar or dump the mixture straight into a warm bath for immediate soaking.

Makes enough for 1 bath soak.

a woman sitting in a colloidal oatmeal bath soak. Her hair is wet and dark brown. Her arms are crossed over her chest and her knees are pulled up tight next to her. The water is milking white in color from the oats.

How to use oatmeal bath soak

a white countertop with a seafoam green sitting on top. The bowl is filled with DIY oatmeal bath soak bath bombs. A natural seafoam sponge is sitting in the background of the bowl.

DIY Colloidal Oatmeal Bath Soak

Yield: 1 batch oatmeal bath soak
Prep Time: 10 minutes
Total Time: 10 minutes

A relaxing and benefical colloidal oatmeal bath to help treat dry, irritated skin conditions.


  • Organic Rolled Oats
  • Baking Soda
  • Essential Oil (optional)
  • Mini muslin drawstring bag (optional)


  1. Add organic rolled oats to a food processor, blender or coffee grinder.
  2. Blend until oats become a very fine powder.
  3. Transfer to a mixing bowl. Add baking soda and optional essential oils.
  4. Mix until fully incorporated.
  5. Transfer to a storage jar or dump oatmeal bath soak directily into warm bath for soaking. You can also add the mixture into a mini muslin pouch and add the pouch into your bath water. This will help make clean up a cinch.
  6. Enjoy your oatmeal bath water for 15-20 minutes. Soaking for extended time can have the opposite effect on the skin.


This recipe is not for consumption.

Be sure your bath water is warm, not hot.

Be sure and check with your doctor to make sure that colloidal oatmeal bath soaks are right for you.

Where to buy Oatmeal Bath Soak

I know not everyone has the time or even desires to DIY everything. So I’ve included a few oat milk bath soaks you can purchase ready made.

I have personally tried all three of these before I decided to make it myself.

Shop This Post

Here you’ll find a list of all the products that were mentioned in this post.

Oats (regular and gluten-free)

Baking Soda

Essential Oils

Storage for Oatmeal Bath Soak

These are my favorite storage jars for almost all my DIY skincare and handmade products. Any storage jar with a sealing lid will work.

I hope you found this information helpful. Colloidal oatmeal bath soaks can have a very soothing effect on dry, itchy, irritated skin if used appropriately.

If you have any questions about whether or not colloidal oatmeal baths are right for you, ask you doctor.


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