How to Make DIY Bath Bombs at Home
How to Make Perfect DIY Bath Bombs at Home (Australian Recipe)
Foolproof recipe with grams, humid-climate tips, and step-by-step photos — create spa-quality fizzies
Bath bombs are a fun, easy DIY project that transforms your bath into a luxurious, fizzy spa experience. Making them at home allows complete control over scents, colours, and skin-safe ingredients. This Australian-optimised recipe uses grams for precision and includes humid-climate adjustments to prevent soft or cracking bombs.
Ingredients (in Grams for Accuracy)
Classic Fizz Bath Bomb Recipe (Yield: 4–6 medium bombs)
Dry Ingredients:
- 200 g Baking Soda (Sodium Bicarbonate)
- 100 g Citric Acid (Anhydrous)
- 100 g Epsom Salt (omit in high humidity)
- 100 g Cream of Tartar
- 5 g Mica Powder (cosmetic-grade)
- 45 g Coconut Oil (melted)
- 5 mL Witch Hazel or Water (in spray bottle)
- 5 mL Essential Oil (lavender, peppermint, etc.)
*All measurements in grams (g) and millilitres (mL) per Australian standards. 1 tsp ≈ 5 g/mL.
Step-by-Step Guide
Step 1: Mix Dry Ingredients
In a large bowl, whisk together baking soda, citric acid, Epsom salt (if using), cream of tartar, and mica until uniformly coloured and lump-free.
Why? Even distribution prevents fizz prematurely and ensures smooth texture.
Step 2: Mix Wet Ingredients
In a small bowl, combine melted coconut oil and essential oil. Keep witch hazel/water in a spray bottle.
Step 3: Combine Wet and Dry
Slowly drizzle wet mix into dry while whisking. Spritz witch hazel 1–2 times if needed. Mixture should hold when squeezed — like damp beach sand.
Humid Climate Tip: Use witch hazel instead of water and work quickly. Omit Epsom salt in QLD/NT summers.
Step 4: Fill the Moulds
Overfill both mould halves, then press together firmly. Tap gently to release. Let sit 5 minutes in mould.
Step 5: Demould & Dry
Carefully remove from moulds. Dry on parchment paper in a cool, low-humidity area for 24 hours.
Step 6: Enjoy!
Store in airtight container. Drop one into warm bath and watch it fizz!
Pro Tip: Add calendula or rose petals to mould before packing for botanical decoration.
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Click & Collect Springvale South | Australia-Wide Shipping