Tools
Everything I wish I’d had when I started making syndet bars in one place.
These tools are free to use, built specifically for syndet bar making, and live here permanently. No sign-up required for either of them. If you want to take your results with you, both tools give you the option to do so.
Find your shampoo & conditioner bar match
Not sure which formula is right for your hair? Three questions, one profile, a recipe pack sent straight to your inbox. The quiz maps your scalp type, conditioning preference, and water type to one of nine profiles, each matched to a specific shampoo and conditioner formula on this site.
Find your perfect shampoo & conditioner bar combo
Three quick questions. Your personalised syndet bar profile, and a recipe pack matched to your hair type, delivered straight to your inbox.
Where should I send your recipe pack?
No spam. Just your recipe pack and occasional DIY formulation tips from Neets at Batch & Bubble. Unsubscribe any time.
While you wait, explore the full syndet bar recipe collection at batchandbubble.com
Batch and bar calculator
Working out ingredient weights, batch costs, and per-bar pricing by hand is the kind of thing that puts people off making a second batch. This calculator does it for you. Enter your bar type, batch size, recipe percentages, and what you paid for each ingredient…it returns the weight of every ingredient you need, your total batch cost, and your cost per bar.
Optional: compare your cost per wash against your current retail product.
Batch setup
Set up your batch details. You'll enter your recipe on the next screen.
Bar type
Bar size
Recipe builder
Enter your ingredient percentages. Weights are calculated automatically from your batch size.
| Ingredient | % | Needed (g) | Bought (g) | Cost ($) |
|---|
Your batch results
Batch summary
Ingredient breakdown
| Ingredient | % | Weight (g) | Cost |
|---|
Per-wash comparison optional
You know your hair best — enter how many washes you expect per bar to see your cost per wash, and compare against what you currently use.
Batch notes optional
A note on the calculator
The cost comparison feature is only as accurate as the inputs. Wash yield in particular varies by hair length, application technique, and how well the bar is stored between uses. The numbers it returns are an estimate, not a guarantee. That said, most people are surprised by how far the math goes in favour of making your own.