Books and Resources to Start Strong
Before you invest in equipment, invest time in understanding the bath bomb business from people who’ve already built it. These books cover product formulation, branding, scaling, and the practical side of bath product manufacturing.
The Bath and Body Business by Marie Gale
This book walks through formulating bath products from scratch, including bath bombs, fizzes, and melts. It covers ingredient selection, proper ratios, and troubleshooting common issues like bombs that won’t hold shape or fizz inconsistently. For a bath bomb maker, the formulation chapters alone are worth the investment.
Shop The Bath and Body Business on Amazon →
The Handmade Marketplace by Philippe Dubost
This resource focuses on the business side—pricing your products, managing costs, scaling production, and selling online and at markets. Bath bomb makers often undercharge because they don’t understand their true material and labor costs. This book fixes that.
Shop The Handmade Marketplace on Amazon →
Soap and Bath Product Formulation by Kevin M. Dunn
A technical deep-dive into chemistry and formulation. If you want to understand why certain ingredients react with others, how to stabilize colors and scents, and how to scale recipes reliably, this is essential. It’s more advanced than beginner guides but gives you confidence in your formulas.
Shop Soap and Bath Product Formulation on Amazon →
Equipment You Need
Bath bomb production requires surprisingly little equipment—most of it costs under $20 per item. The key is choosing tools that handle the repetitive mixing, molding, and packing tasks without burning out your hands or wasting ingredients.
Mixing and Preparation
- Stainless steel mixing bowls: Use these for combining dry ingredients (baking soda, citric acid, cornstarch). Avoid aluminum, which reacts with citric acid.
- Whisk or hand mixer: Essential for breaking up lumps and incorporating liquid evenly without overworking the mixture.
- Kitchen scale: Accurate to 0.1 grams. You’ll measure ingredients by weight, not volume, for consistency.
- Measuring cups and spoons: For liquids and small volumes of fragrance or colorant.
- Rubber spatula: For scraping bowls and transferring dough to molds.
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Molding and Pressing
- Bath bomb molds: Two-piece plastic sphere molds (2-inch diameter) are standard. Start with 6–12 molds so you can produce while others cure.
- Mold press or hand clamp: Helps compress the mixture tightly into molds without your hands cramping. A simple C-clamp works.
- Silicone molds: Alternative to plastic for unique shapes (hearts, stars, cubes). More durable but slower to unmold.
Shop bath bomb molds on Amazon →
Curing and Storage
- Sheet pans or shallow trays: For resting unmolded bombs during the 24–48 hour curing phase.
- Drying rack or wire shelving: Allows air circulation around bombs, speeding cure time and preventing moisture pooling on the underside.
- Glass or plastic jars: For storing finished bombs before shipping. Airtight containers keep them fresh longer.
- Labels and labels printer: For branding and ingredient disclosure (required for cosmetics).
Shop shelving units on Amazon →
Packaging
- Kraft boxes or clear plastic boxes: Standard for individual bomb packaging.
- Tissue paper and filler: Protects bombs during shipping and looks professional.
- Packing tape and shipping labels: Essential for mail orders.
- Bubble wrap or foam sheets: For cushioning inside boxes.
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Safety and Hygiene
- Dust mask or respirator: Baking soda and citric acid powder creates fine dust. A basic N95 mask is sufficient; upgrade to a respirator if you work daily.
- Nitrile or latex gloves: Protect hands from oils and dyes.
- Safety glasses: Especially if using colorants that could splash.
- Apron: Bath bomb mix stains, so use a dedicated work apron.
What to Buy First vs Later
Your first purchase should cover only what you need to make and test your first 100–200 bombs. Once you’ve validated demand and refined your recipes, expand to higher-capacity equipment.
- Month 1: Kitchen scale, stainless steel bowls, whisk, 6 bath bomb molds, basic safety gear (mask, gloves), sheet pans, measuring cups.
- Month 2–3: Additional molds (buy 6–12 more), drying rack, packaging boxes, labels and printer.
- Month 4+: Larger mixing bowls, hand mixer, silicone molds for custom shapes, wire shelving, bulk storage containers for ingredients.
- After 6+ months: Only if scaling significantly—consider a small industrial mixer, commercial-grade molds, or a dedicated work table.
New vs Used Equipment
For bath bomb making, most equipment is inexpensive new, so the cost savings from buying used rarely outweigh the risks. However, there are exceptions.
Buy new: Molds, mixing bowls, and anything that touches ingredients directly. Used plastic can harbor residue or be damaged in ways that affect product quality. Your scale must be accurate, so buy new to ensure calibration. Safety gear (masks, gloves) must be new. Consider used: Wire shelving units, sheet pans, and work tables are durable and take no abuse. Thrift stores and Facebook Marketplace often have sturdy options for half the price. A hand mixer from a garage sale is fine as long as it works. Avoid used pressure cookers or anything with seals—not relevant to bath bombs, but the principle applies to any equipment involving containment.
Budget around $150–300 for a complete starter setup if you buy new basics and source shelving used.
Where to Buy
- Amazon: Fast shipping, wide selection, good for molds, scales, and mixing tools.
- Bulk suppliers (WebstaurantStore, Restaurant Depot): If you scale, buy mixing bowls and trays in bulk here—cheaper per unit than retail.
- Beauty supply distributors (Bramble Berry, New Directions Aromatics, Wholesale Supplies Plus): Specialize in bath bomb and soap-making equipment, often bundling molds with tools.
- Local restaurant supply stores: Mixing bowls, sheet pans, and storage containers at competitive prices, often without shipping costs.
- Thrift stores and Facebook Marketplace: Shelving, work tables, and hand tools.
- Specialty craft suppliers (Michael’s, Joann, local art supply stores): Molds, colorants, and sometimes safety gear, often with coupons.