Built by a cosmetic chemist
Chemist-written diagnostic pathwaysStop guessing why your batch failed.
FormuFix helps natural cosmetic formulators figure out what went wrong with separated creams, cloudy toners, greasy balms and more. Answer guided questions about your formula and get solutions ranked by what's most likely to work.
Free toner diagnosis · No card needed · Credits never expire
Questions FormuFix answers
The separation panic
"My lotion looked perfect yesterday. This morning it split into two layers. What happened?"
FormuFix's answer
Tell it your product type and what's gone wrong. Get the most likely root causes and clear, prioritised fixes for your formula.
The real problem
Formulating is trial and error, and you're debugging it alone.
When a batch misbehaves, the cause could be your emulsifier, pH, mixing speed, temperature, preservative or a dozen other things. Working out which one applies to your formula is genuinely hard.
You followed the recipe
You measured carefully, and your cream split anyway.
Hours of searching
Blogs, forums and videos. Ten possible causes, none specific to you.
Conflicting group advice
Helpful people, but they can't see your formula.
Wasted ingredients
Another batch in the bin, and still no idea what to change.
One failed batch can mean wasted ingredients, lost hours, and a knock to your confidence.
Knowing why it failed is how you get it right next time.
How it works
From failed batch to clear fix
FormuFix works through a structured pathway of questions about your formula, then combines chemist-written diagnostic logic with AI to pinpoint the most likely causes.
Pick your product type
Lotion, balm, gel, toner, cream, cleanser, shampoo bar and more.
Narrows the possible causes immediately
Describe what's gone wrong
Greasy? Smells odd? Separating? Cloudy? Choose the issue you're seeing.
Every issue has its own diagnostic pathway
Answer a few questions
About your ingredients, percentages, and how you made it.
This is where the real detective work happens
Get helpful tips as you go
Little "smart nuggets" explain why each answer matters.
You learn while you troubleshoot
Clear solutions, ranked
Fixes ordered by what's most likely to help your specific formula.
A clear next step, not another guess
Included with FormuFix
More than a diagnosis
Toners, mists, micellar waters, gels, balms, lotions, creams, cleansers and shampoo bars, plus bonus tools for the moments in between.
Preservative Checker
Enter your preservative, percentage and pH, and FormuFix checks if you're within the recommended zone. No spreadsheets.
Quick Triage Hub
Fast initial guidance to tell you whether your issue needs immediate attention or a full diagnosis.
Visual Quickcheck
Short step-by-step videos that show you exactly how to fix common issues like tackiness or separation.
Meet the chemist
Hi, I'm Timi
Cosmetic chemist, teacher, and creator of FormuFix (with my fat orange cat Freddie keeping an eye on things).
As a teacher, I want to help people learn faster and build skills without the headache. Trial and error is how formulating works, but when you're a student it can take your confidence and make you question your abilities.
I created FormuFix to help you figure out what's happening so you can try again with confidence.
FormuFix told me the issue was probably my mixing speed. I fixed it in 10 minutes. It didn't just fix that batch, but corrected my method.
Before this, I would just throw the batch away and cry about the wasted ingredients. Now I actually know what to change, and it helps me learn more.
I used to try to fix issues by reading blogs and asking in free groups. But this app explains what's going on without making me feel silly.
Simple pricing
Pay as you go. No subscriptions.
1 credit = 1 full diagnosis for micellar waters, gels, balms, lotions, creams, cleansers, shampoo bars and Vitamin C / AHA / BHA issues. Credits never expire.
3 credits
£9.99
$12.99 · £3.33 per diagnosis
- 3 full diagnoses
- Ranked solutions
- Results saved to your account
10 credits
£24.99
$32.99 · £2.50 per diagnosis
- Everything in Starter
- Better per-diagnosis value
- Ideal for regular formulating
25 credits
£49.99
$64.99 · £2.00 per diagnosis
- Best per-diagnosis value
- For brands and students
- Credits never expire
Need extra help?
Expert Review · £57 (≈ $77)
A personal one-to-one review of your formulation by a cosmetic chemist, with actionable feedback in 2-3 business days.
Please note: For login and sign-up, a Google account is required.
Try it on a real batch.
Start with a free toner diagnosis. No card required. See what FormuFix finds, then decide if it's worth keeping.
FormuFix is part of the FormulatorHub Smart Apps series
FormuFix is a troubleshooting tool designed to help you identify potential issues in your formulations. Success is not guaranteed and results may vary. The effectiveness of any recommendations depends on your individual formula, ingredients, tools, methods, and other factors specific to your formulation process. Always perform appropriate testing and consult with qualified professionals when needed.