Bowls of xanthan gum and psyllium husk powder with measuring spoons beside a glass of water, psyllium gel and a sliced seeded low-carb loaf

Can You Use Psyllium Husk Instead of Xanthan Gum in Keto Baking?

October 16, 2026

Quick answer: Yes, you can use psyllium husk instead of xanthan gum, but it isn't a 1:1 swap. Use about 2 teaspoons of psyllium husk powder for every 1 teaspoon of xanthan gum, add a little extra liquid and let the dough rest for 10 minutes. The swap works best in breads, rolls, pizza bases, wraps and pastry. For cakes, cookies, brownies and cold sauces, xanthan gum still gives the better texture.

Both ingredients do the job gluten would normally do in keto and gluten-free baking: they hold the crumb together and stop bakes falling apart. They just do it in different ways. Once you know how each one behaves, you'll know when you can swap them, how much to use and when it's better to keep the recipe as written.

What xanthan gum and psyllium husk actually do

Xanthan gum

Xanthan gum is a thickener and stabiliser made by fermenting sugar with a bacterium called Xanthomonas campestris, then drying and grinding the result into a fine powder. It's an approved food additive with the number E415. It's very powerful, so recipes use tiny amounts, often just ¼ to 1 teaspoon. It thickens liquids even when cold, keeps sauces from separating and gives cakes and cookies a tender, even crumb.

Our Groovy Keto Xanthan Gum is an extra-fine, non-GMO powder in a 150g pack, made for keto baking and for thickening or stabilising sauces.

Psyllium husk

Psyllium husk is the outer coating of seeds from the Plantago ovata plant. Mixed with water, it swells into a thick gel. In a dough, that gel traps air and gives a flexible, bready texture that you can knead and shape, which xanthan can't do. That's why so many keto loaves, rolls and pizza bases rely on it.

Our Groovy Keto Psyllium Husk Powder is 99% pure psyllium husk, comes in 250g and 500g sizes and can be used in baking, in smoothies and to thicken sauces and gravies.

How much psyllium husk replaces xanthan gum?

Xanthan gum is far stronger by weight, so you need more psyllium to do the same job. These conversions are a good starting point:

If the recipe uses	Psyllium husk powder	Whole psyllium husks	Extra liquid
½ tsp xanthan gum	1 tsp	1½ tsp	About 1½ tbsp
1 tsp xanthan gum	2 tsp	1 tbsp	About 3 tbsp
2 tsp xanthan gum	4 tsp	2 tbsp	About 6 tbsp

After mixing, leave the dough or batter to rest for around 10 minutes so the psyllium can absorb the liquid. If it still feels stiff, add a splash more water. If you're baking by weight, a common rule in gluten-free bread is roughly 5% psyllium to the weight of the flour, which is about 6g of psyllium for every 125g of flour.

Powder and whole husks aren't interchangeable gram for gram either. Powder is finer and more concentrated, so use about 80% of the weight if a recipe asks for whole husks and you only have powder.

When the swap works well

Keto bread and rolls. This is where psyllium shines. It gives structure, chew and a dough that holds its shape, often better than xanthan alone.
Pizza bases and flatbreads. Psyllium makes a dough you can roll out and lift, rather than one you have to spread with a spatula.
Wraps and tortillas. The gel keeps them flexible enough to fold without cracking.
Pastry and pie crusts. Bob's Red Mill tested a straight swap in a gluten-free pie crust and found the result indistinguishable from the xanthan version.
Hot sauces and gravies. A small amount of psyllium powder whisked into a hot sauce will thicken it, though the texture is slightly less silky than with xanthan.

Keto bakers often pair psyllium with a light, low-carb fibre for bread. Our Groovy Keto Oat Fibre is gluten-free and designed to give a light, fluffy texture in breads, pancakes and waffles.

When to stick with xanthan gum

Cakes, cupcakes and muffins. Psyllium can make a sponge dense, springy and slightly gummy. Xanthan gives a softer, more tender crumb.
Cookies and brownies. Psyllium tends to make these chewy in a bready way rather than fudgy or crisp.
Cold sauces, dressings and ice cream. Xanthan thickens smoothly without heat. Psyllium can leave a jelly-like or slightly grainy texture in anything that isn't cooked.
Recipes that only need a pinch. If a recipe uses ¼ teaspoon of xanthan to stabilise a mousse or a custard, psyllium isn't a sensible stand-in.

The reverse swap, xanthan instead of psyllium, is harder still. Xanthan can't recreate psyllium's stretch, so a bread recipe built around psyllium usually turns out crumbly and too sticky to shape if you replace it.

Tips for baking with psyllium husk

Weigh it if you can. Psyllium is light and fluffy, so teaspoon measures vary. Digital scales give more consistent results.
Make a gel first for bread. Whisk the psyllium into at least 10 times its weight in water (for example, 10g psyllium in 100g water), leave it for 5 to 10 minutes, then mix the gel into your dough.
Rest the dough. Ten minutes makes a noticeable difference to how easily the dough comes together.
Expect a longer bake. Psyllium holds onto moisture, so breads may need extra time in the oven. Check that the centre is fully baked, not just the crust.
Don't panic about colour. Some psyllium gives bakes a purple or grey tinge, especially with baking powder. It doesn't change the taste.
Start low when combining. If you use psyllium and xanthan together, reduce both so the result doesn't turn gummy.

Do psyllium husk and xanthan gum fit a keto diet?

Yes. Both are made up almost entirely of fibre, and you only use a few grams across a whole loaf or batch, so either one adds very little to the carbs in a portion. On UK labels, fibre is listed separately from carbohydrate, so you don't need to subtract it. Our guide Do You Subtract Fibre From Carbs on UK Labels? explains how that works.

For a deeper look at each ingredient on its own, read our keto guide to psyllium husk powder and our guide to xanthan gum on keto.

Frequently asked questions

Can I use psyllium husk instead of xanthan gum?

Yes, in yeasted breads, rolls, pizza bases, wraps and pastry. Use about 2 teaspoons of psyllium husk powder for every 1 teaspoon of xanthan gum, add a little extra liquid and rest the dough for 10 minutes. For cakes, cookies and cold sauces, xanthan gum gives a better result.

How much psyllium husk replaces 1 teaspoon of xanthan gum?

Around 2 teaspoons of psyllium husk powder, or 1 tablespoon of whole psyllium husks, replaces 1 teaspoon of xanthan gum. Treat it as a starting point and adjust the liquid, because psyllium absorbs far more water than xanthan.

Can I use xanthan gum instead of psyllium husk in keto bread?

Not as a straight swap. Xanthan gum binds a dough but does not give it the stretch and chew that psyllium does, so a keto loaf made with xanthan alone tends to be crumbly and the dough is too sticky to shape. If a bread recipe is built around psyllium, it is best to keep it.

Is psyllium husk powder the same as whole psyllium husk?

It is the same ingredient, ground more finely. Powder absorbs water faster and is more concentrated, so use roughly 80% of the weight of whole husks if a recipe calls for whole husks and you only have powder.

Why did my bread turn purple when I used psyllium husk?

Some psyllium husk can give bakes a purple or grey tinge, especially alongside baking powder. It is a colour change only and does not affect the taste. Trying a different batch or brand of psyllium is the usual fix.

Can you use psyllium husk and xanthan gum together?

Yes. Many keto and gluten-free bread recipes use both: psyllium for structure and chew, and a small amount of xanthan gum for a softer, more even crumb. If you combine them, cut back on each so the dough does not turn gummy.