Beauty & personal care
Vegan alternative to keratin hair treatment: the best substitutes
Everything you need to replace keratin hair treatment with a plant-based substitute — which one to use, the exact ratio, and the mistakes that ruin the result.
Short answer
Key takeaways
- Best all-round swap: Hydrolysed soy or wheat protein (strengthening masks).
- Ratio: Follow product dosing.
- Pro tip: Plant protein treatments build the same bonds and don't need formaldehyde-based smoothing to work.
- 2 vegan alternatives to compare for keratin hair treatment.
Why keratin hair treatment isn't vegan
Derived from feathers, horns and hooves.
Best vegan substitutes
| Substitute | Best for |
|---|---|
| Hydrolysed soy or wheat protein | Strengthening masks |
| Bond-builders (bis-amino cysteamine) | Repair treatments |
How to substitute keratin hair treatment, step by step
- 1
Pick the right substitute for the job
For most recipes use Hydrolysed soy or wheat protein — strengthening masks. If you need a different texture, Bond-builders (bis-amino cysteamine) works for repair treatments.
- 2
Measure using the correct ratio
Follow product dosing. Weigh rather than eyeball it — small errors show up much faster when replacing keratin hair treatment.
- 3
Adjust the method
Plant protein treatments build the same bonds and don't need formaldehyde-based smoothing to work.
- 4
Taste and correct
Plant swaps are usually a little less salty and less rich than keratin hair treatment. Season at the end and add acid (lemon, vinegar) or umami (miso, nutritional yeast) if the dish tastes flat.
Mistakes to avoid
- Swapping by volume when the recipe measures keratin hair treatment by weight — check the ratio above first.
- Using a sweetened or flavoured version in a savoury recipe.
- Ignoring the method change: Plant protein treatments build the same bonds and don't need formaldehyde-based smoothing to work.
- Assuming every packaged product labelled "plant-based" is vegan — some still contain milk powder, honey or egg. Scan the barcode to be sure.
Conversion ratio
Follow product dosing.
Pro tip
Plant protein treatments build the same bonds and don't need formaldehyde-based smoothing to work.
Check the evidence before choosing
Vegan ingredients, cruelty-free testing policies and environmental claims answer different questions. Check the exact product and its market, not just the brand name or a badge on the front of the pack.
Compare price per serving or use, the full ingredient list and any certification in the certifier’s own directory. Missing evidence means the claim is unconfirmed; it does not automatically mean the product fails.
- A practical example
- For a plant milk, compare protein and fortification alongside price per litre. For skincare, check ingredients and animal-testing policy separately.
- What to keep in mind
- Formulas, prices and certification can change. A ranking is a starting point for comparison, not a guarantee or an independent laboratory test.
Frequently asked questions
- What is the best vegan alternative to keratin hair treatment?
- Hydrolysed soy or wheat protein is the closest all-round swap — strengthening masks. Follow product dosing.
- Why isn't keratin hair treatment vegan?
- Derived from feathers, horns and hooves.
- How much do I use instead of keratin hair treatment?
- Follow product dosing.
- Any tips for getting it right?
- Plant protein treatments build the same bonds and don't need formaldehyde-based smoothing to work.
Not sure if a product contains keratin hair treatment?
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