This DIY Tea Tree Conditioner Bar is a lightweight, deeply moisturizing conditioner that will help your hair be soft and smooth, without being too oily.

If you’re looking for a plastic-free, natural way to soften and hydrate your hair, this DIY tea tree conditioner bar is the perfect solution.

It’s made with nourishing butters, conditioning emulsifiers, and essential oils that leave your hair smooth, manageable, and refreshed, without the need for a bottle.

I have made a conditioner bar before, but with my blonde fine hair, it always left my hair feeling too oily. So I got back to studying and working on finding a better recipe.

This recipe comes from Simply Earth’s Conditioner Bar Kit, and it’s one of the easiest ways to make your own hair conditioner at home. Plus, these bars are great for travel, last a long time, and double as a moisturizing body bar or shaving bar.

I LOVED this recipe and how well it worked for my hair, so I had to share it with you!

Why Switch to a Conditioner Bar?

Conditioner bars are solid, water-free alternatives to liquid conditioner. They last longer, reduce plastic waste, and are ideal for minimal, natural hair care routines.

This one is made with gentle, plant-based ingredients that smooth the hair cuticle and lock in moisture without any silicones or synthetic fragrances.

Key Benefits of This Conditioner Bar

Here are a few of the benefits that come from this homemade conditioner bar:

BTMS-50 (Conditioning Emulsifier) – A gentle emulsifier that softens and detangles hair without buildup (It works SO well!)

Cetyl Alcohol – Adds a smooth texture to the bar and conditions the hair shaft

Cocoa Butter + Shea Butter – Deeply moisturizing and great for dry or damaged hair

Argan Oil – Lightweight and nutrient-rich, supports shine and hair health

Tea Tree Essential Oil – Naturally clarifying and scalp-soothing (It helped me with my itchy scalp!)

Lavender Essential Oil – Calming and supportive for a healthy scalp

Geogard ECT – A natural preservative that helps keep the bar safe and stable

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DIY Tea Tree Conditioner Bar Recipe

Here is the super easy DIY conditioner bar recipe! I got all the ingredients from Simply Earth’s DIY Conditioner Bar Box (use code KATE10 to get 10% off!) but you might be able to find the ingredients somewhere else.

Ingredients

¾ cup + 2 tbsp BTMS-50 (Conditioning Emulsifier)
¼ cup Cetyl Alcohol
¾ tbsp Cocoa Butter
¾ tbsp Shea Butter
¾ tbsp Argan Oil
30 drops Lavender Essential Oil
20 drops Tea Tree Essential Oil
40 drops Geogard ECT Preservative
Silicone soap mold

Instructions

In a double boiler or microwave-safe container, combine BTMS-50, Cetyl Alcohol, Cocoa Butter, Shea Butter, and Argan Oil. Heat to about 160°F, stirring occasionally until melted.

melting all the ingredients for diy conditioner bar

Let the mixture cool to about 135°F, just before it starts to solidify. Add essential oils and Geogard ECT. Stir well to fully incorporate.

Pour into silicone molds and let cool until completely solid. Once set, remove from molds and wrap or store in an airtight container.

Extra Tips

This bar also works beautifully as a moisturizing body bar or a shaving bar.
To add color, mix in a small amount of mica powder during step 2.
If your home is warm, you can keep the bar in the fridge to help it stay firm longer. I’ve had to do this before during the summer.

Front view of conditioner bar all nice and smooth

How to Use a Conditioner Bar

Wet your hair. Rub the bar between your hands or apply directly to wet hair, focusing on the ends. Massage through your hair, then rinse thoroughly. Store in a soap dish with good drainage to keep your bar dry between uses.

Tea Tree Conditioner Bar

No Ratings

Materials

¾ cup + 2 tbsp BTMS-50 (Conditioning Emulsifier)
¼ cup Cetyl Alcohol
¾ tbsp Cocoa Butter
¾ tbsp Shea Butter
¾ tbsp Argan Oil
30 drops Lavender Essential Oil
20 drops Tea Tree Essential Oil
40 drops Geogard ECT Preservative
Silicone soap mold

Instructions

In a double boiler or microwave-safe container, combine BTMS-50, Cetyl Alcohol, Cocoa Butter, Shea Butter, and Argan Oil. Heat to about 160°F, stirring occasionally until melted.
Let the mixture cool to about 135°F, just before it starts to solidify. Add essential oils and Geogard ECT. Stir well to fully incorporate.
Pour into silicone molds and let cool until completely solid. Once set, remove from molds and wrap or store in an airtight container.

Notes

This bar also works beautifully as a moisturizing body bar or a shaving bar.
To add color, mix in a small amount of mica powder during step 2.
If your home is warm, you can keep the bar in the fridge to help it stay firm longer. I've had to do this before during the summer.

Final Thoughts

This DIY tea tree conditioner bar is a nourishing, eco-friendly addition to your natural hair care routine. It’s simple to make, easy to store, and works just as well as store-bought options, without the waste or synthetic ingredients.

Whether you’re new to solid conditioner or already love shampoo bars, this recipe is a great next step. So get your Simply Earth DIY Conditioner Bar Box and enjoy these beautiful bars today!