Have you ever wondered what to do with onion peels instead of throwing them away? Those papery onion skins might look like ordinary kitchen waste, but they have some surprisingly creative uses around the home!
From making homemade vegetable stock and natural fabric dyes to experimenting with gardening ideas and beautiful DIY crafts, there are plenty of clever ways to reuse onion peels and scraps.
If you’re trying to reduce food waste, save money, or simply make the most of what you already have in your kitchen, you’re going to love exploring these ideas.
I’ve previously shared creative ways to reuse banana peels, eggshells, leftover bread, used coffee grounds, tea bags, orange peels, and pomegranate peels. Today, we’re giving the humble onion peel its turn!
Let’s explore 20 interesting uses for onion peels and scraps, including practical household ideas and traditional uses you might not have heard of before.
Things to Know Before Reusing Onion Peels and Scraps
Before trying these creative uses for onion peels, it’s important to collect, clean, and store them properly.
- Choose healthy onions: Only use peels from fresh onions that are free from mould, rot, or signs of spoilage.
- Wash them thoroughly: Rinse onions under clean running water before peeling, especially if you plan to use the skins in cooking. Avoid washing them with soap or detergent.
- Store them properly: If you’re not using the peels immediately, you can freeze clean onion skins in a sealed, food-safe container until needed.
- Keep them away from pets: Onions can be harmful to cats and dogs if eaten, so make sure onion scraps and peels are kept out of their reach.
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How to Make Onion Peel Powder
Onion peel powder is a creative way to reuse onion skins in homemade seasonings and other kitchen projects.
- Collect clean onion skins from fresh, healthy onions.
- Spread them in a single layer on a baking tray.
- Dry them in the oven at a low temperature until completely dry and crisp, checking regularly to prevent burning.
- Allow the skins to cool completely.
- Grind them into a fine powder using a clean spice grinder or food processor.
- Store the powder in a clean, dry, airtight container.
Tip: Moisture can encourage mould growth. Make sure the onion skins are completely dry before grinding or storing them, and discard the powder if it develops an unusual smell or signs of spoilage.
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How to Make Onion Peel Tea
Onion peel tea is a traditional preparation made by simmering clean onion skins in water.
Ingredients:
- A small handful of clean onion peels
- 2 cups of water
Instructions:
- Bring the water to a boil in a saucepan.
- Add the onion peels and reduce the heat.
- Simmer gently for approximately 10–15 minutes.
- Remove from the heat and strain the liquid, discarding the peels.
The resulting onion-infused water can be used for certain household and craft projects or enjoyed as a traditional beverage.
Important: Although onion peels contain plant compounds such as flavonoids, homemade onion peel tea has not been established as a treatment for medical conditions. It should not replace prescribed medicines or medical care. People who are pregnant, breastfeeding, taking medication, or managing medical conditions should seek professional advice before consuming onion peel preparations for medicinal purposes.
20 unbelievable uses of onion peels and scraps
Onion Peels and Scraps for Gardening:
Did you know that onion peels and scraps can have a second life in your garden? Instead of throwing them away, you can experiment with several simple ways to reuse them while reducing kitchen waste.
Here are five creative onion peel uses for gardeners.
1. Regrow Onions From Kitchen Scraps
Don’t throw away the bottom of an onion just yet! If the root end is still intact, you may be able to encourage new green shoots to grow.
Here’s how:
- Save the bottom section of a healthy onion, leaving a small amount of flesh attached to the roots.
- Allow the cut surface to dry briefly.
- Place it root-side down in a pot of well-draining potting mix.
- Position the pot somewhere with plenty of sunlight.
- Water when the top layer of soil feels dry, avoiding waterlogged conditions.
With a little patience, you may see fresh green shoots emerging.
Gardening tip: Regrowing an onion bottom doesn’t guarantee a new full-sized bulb, but it can be a fun kitchen-scrap gardening experiment.
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2. Add Onion Peels to Your Compost
One of the easiest ways to reuse onion skins is by adding them to your compost pile.
Onion peels are organic material that gradually decomposes, contributing to the finished compost that helps improve garden soil.
For better results:
- Tear large pieces of onion skin into smaller pieces to help them break down.
- Mix them with other kitchen scraps and dry compost materials.
- Avoid adding large amounts of onion waste in one place.
- Keep the compost properly covered and inaccessible to pets.
Tip: Compost made from a balanced mixture of organic materials can help improve soil structure and support healthy plant growth.
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3. Experiment With Onion Peel Water in the Garden
Some gardeners make onion peel water by soaking onion skins in water and using the strained liquid on their plants.
Although onion peels contain naturally occurring plant compounds, there is limited reliable evidence that homemade onion peel water works as a pesticide or provides consistent benefits to plants.
If you want to experiment with it:
- Place a small handful of clean onion skins in a litre of water.
- Leave them to soak for approximately 12–24 hours.
- Strain the liquid and discard the solids appropriately.
- Test a small amount on one established plant before using it more widely.
Avoid storing the mixture for extended periods, especially in warm weather.
Important: Onion peel water is not a proven treatment for aphids or other garden pests. For an active pest problem, use a suitable, evidence-based pest-control method.
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4. Use Onion Skins as Part of a Mulching or Composting Mix
Dry onion skins are biodegradable and can be mixed with other organic materials destined for the garden.
However, because they are very light, they can blow away easily when spread on the soil surface.
A more practical option is to compost them first and use the finished compost around your plants.
If you experiment with onion peels in garden beds, use small amounts rather than creating a thick layer that could become matted when wet.
Pet safety reminder: Onion scraps can be harmful to cats and dogs if eaten. Avoid leaving accessible onion peels around garden beds used by pets.
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5. Onion Peel Water for Orchids: A Gardening Experiment
You may have come across homemade onion peel water recipes that claim to encourage orchids to produce more flowers.
Onion skins contain naturally occurring compounds, but there isn’t enough reliable evidence to recommend onion peel water as an effective orchid fertiliser or flowering treatment.
Orchids can be sensitive to growing conditions, and homemade organic mixtures may cause problems if they encourage microbial growth or keep the potting medium too wet.
For healthier orchids, focus on suitable light, good drainage, appropriate watering, and a fertiliser formulated for orchids.
If you’re interested in experimenting with homemade plant feeds, it’s best to begin with more tolerant garden plants rather than delicate orchids.
Remember: The best way to reuse onion peels in the garden is often the simplest—composting them and returning that organic matter to the soil.
Read more:
Traditional Beauty Uses for Onion Peels: Skin and Hair
Onion peels have also found their way into traditional homemade beauty preparations. From hair rinses to natural colouring experiments, people have explored different ways to reuse these papery skins.
Although onion skins contain naturally occurring plant compounds, most of their claimed benefits for skin and hair haven’t been established through reliable human studies.
Here are five traditional and creative uses worth knowing about, along with some important precautions.
6. Onion Peel Water for Skin: A Traditional Practice
Onion-infused water has sometimes been used in traditional home remedies for skin care.
However, there isn’t enough reliable evidence to recommend onion peel water for treating rashes, itching, eczema, or fungal infections such as athlete’s foot.
In fact, onion preparations can cause irritation or allergic reactions in some people, particularly when applied to sensitive or damaged skin.
Important: Avoid applying onion peel water to broken, irritated, or inflamed skin. If you have athlete’s foot, a pharmacist can recommend an appropriate antifungal treatment.
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7. Homemade Onion Peel and Honey Face Mask
If you enjoy experimenting with natural DIY beauty recipes, you may have come across face masks made with finely ground onion peels and honey.
A traditional mixture uses:
- 1 teaspoon of very finely ground, clean onion peel powder
- 2 teaspoons of honey
The ingredients are mixed to form a paste.
However, there is no good clinical evidence that this homemade mask firms the skin, prevents wrinkles, or reverses signs of ageing.
Skin safety tip: Onion powder may irritate facial skin. Avoid this preparation if you have sensitive skin, eczema, allergies to its ingredients, or broken skin. Test a tiny amount on a small area first, and don’t use it if any irritation develops. Keep it away from your eyes.
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8. Onion Peel Hair Rinse
Some traditional hair-care routines include rinsing the hair with onion-infused water.
Onion peels contain plant compounds, but that doesn’t necessarily mean applying the water to your scalp will stimulate hair growth or prevent hair loss.
If you enjoy experimenting with homemade hair rinses, remember that they may irritate sensitive scalps.
Always allow the liquid to cool completely, use a freshly prepared mixture, and avoid applying it to an irritated or broken scalp.
Remember: Onion peel rinses haven’t been proven to treat dandruff, scalp infections, or hair loss.
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9. Onion Peel and Olive Oil Hair Mask
Another traditional beauty idea combines onion peel powder with olive oil to create a homemade scalp preparation.
Olive oil can help condition some hair types, but adding onion peel powder hasn’t been shown to promote hair regrowth.
Because finely ground onion skins may cause irritation or leave particles in the hair, this mixture isn’t suitable for everyone.
If you’re considering trying a homemade scalp preparation, test the ingredients on a small area first. Avoid using it on damaged or irritated skin, and stop immediately if you experience itching, redness, or discomfort.
Hair-care note: Persistent hair loss can have many causes. A healthcare professional or dermatologist can help identify the cause and recommend suitable treatment.
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10. Experiment With Onion Skins as a Natural Hair Colour
Did you know that onion skins can produce beautiful golden, yellow, and copper-brown colours when used as natural dyes?
They’re particularly popular for dyeing fabrics, wool, and Easter eggs, but some DIY enthusiasts have also experimented with onion skin water as a temporary hair tint.
The colour result depends on factors such as hair colour, porosity, and preparation. Onion peel water isn’t a reliable way to cover grey hair, and results may be very subtle or uneven.
If you’re curious about natural hair colouring, test a cooled preparation on a small, hidden strand of hair first, and avoid contact with irritated skin or the eyes.
For reliable grey-hair coverage, choose a hair-colouring product intended for that purpose.
Creative Ways to Use Onion Peels and Scraps in Cooking
Before throwing away those papery onion skins, consider giving them a second life in your kitchen!
Onion peels can add colour and subtle flavour to homemade stocks, soups and other dishes. Just make sure you use clean peels from fresh, healthy onions.
Here are four creative ways to reuse onion peels in cooking.
11. Make Homemade Vegetable Stock
One of the easiest ways to reuse onion peels is to add them to homemade vegetable stock.
The papery skins of yellow and red onions can give your stock a beautiful golden or reddish-brown colour while adding a subtle onion flavour.
How to use them:
- Collect clean onion skins and scraps from healthy onions.
- Combine them with other vegetable scraps, such as carrot peels, celery ends and herb stems.
- Cover with water and simmer gently until the stock develops a pleasant flavour.
- Strain thoroughly to remove the onion skins and vegetable scraps.
Use your homemade vegetable stock in soups, stews, rice dishes and sauces.
Tip: Refrigerate the finished stock promptly and use it within a few days, or freeze it in portions for future meals.
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12. Add Natural Colour and Flavour to Rice and Bread
Did you know that onion skins can also be used to add a little colour and flavour to everyday cooking?
For rice, try simmering a few clean onion skins in the cooking water, then removing them before serving.
You can also experiment with adding a small amount of finely ground, food-safe onion peel powder to homemade bread dough.
Start with a small quantity, as too much powder may create a bitter flavour or gritty texture.
This is a simple way to experiment with ingredients you might otherwise throw away.
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13. Give Soups, Stews and Bone Broth Extra Flavour
Onion skins make a useful addition to homemade soups, stews and bone broth.
Instead of adding only chopped onions, include a few clean outer skins while your broth simmers.
They can contribute a deeper colour and subtle flavour, particularly in slow-cooked dishes.
Remember to remove and discard the papery skins before serving.
Kitchen tip: A reusable cooking sachet or fine-mesh strainer can make removing onion skins and other flavouring ingredients much easier.
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14. Make Homemade Onion Peel Seasoning
If you enjoy creating homemade seasonings, dried onion skins offer another opportunity to experiment.
Once your onion peels have been cleaned, dried completely and ground into a fine powder, you can try adding small amounts to savoury dishes.
Ideas to try:
- Mix a little into homemade seasoning blends.
- Add a pinch to soups or vegetable stews.
- Experiment with small amounts in bread dough.
- Combine with dried herbs for a homemade savoury seasoning.
Because onion skins can have a stronger, slightly bitter taste than onion flesh, begin with a tiny quantity and adjust according to your preference.
Storage reminder: Keep homemade onion peel powder in a clean, completely dry, airtight container. Discard it if you notice moisture, mould or an unusual smell.
Traditional Uses and Potential Health Benefits of Onion Peels
Onion peels are more than just kitchen scraps. They contain naturally occurring plant compounds, including quercetin, a flavonoid studied for its antioxidant properties.
For generations, people have also explored onion-based preparations in traditional home remedies. Today, scientists are investigating some of these plant compounds to better understand their potential effects on human health.
However, an important distinction exists between the benefits observed in laboratory studies, the effects of concentrated onion peel extracts, and what happens when someone drinks homemade onion peel tea.
Let’s explore four traditional uses and what we currently know about them.
15. Onion Peel Tea and Traditional Pain Relief
Onion peel tea has been used in some traditional home-remedy practices for general discomfort and muscle aches.
Onion skins contain quercetin and other plant compounds that researchers have investigated for their potential anti-inflammatory properties.
While this research is interesting, there isn’t sufficient human evidence showing that homemade onion peel tea relieves muscle pain or cramps.
If you enjoy onion peel tea as a traditional beverage, it’s important to understand that it shouldn’t replace appropriate treatment for persistent or unexplained pain.
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16. Onion Peel Tea and Weight Management
You may have seen claims suggesting that onion peel tea helps with weight loss.
Plain onion peel tea, prepared without sugar or honey, is generally a low-calorie drink. Choosing an unsweetened beverage instead of a sugary drink can be one small part of a balanced eating routine.
However, there is no convincing clinical evidence that homemade onion peel tea directly burns fat, suppresses appetite, or produces significant weight loss.
Rather than viewing it as a weight-loss remedy, it’s more accurate to consider it an optional traditional beverage.
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17. Onion Peel Tea as a Traditional Bedtime Drink
In some home-remedy traditions, warm herbal preparations, including onion peel tea, are enjoyed in the evening as part of a relaxing routine.
A warm drink can be a comforting way to unwind before bedtime.
However, claims that onion peel tea works as a natural sedative or quickly produces deep sleep have not been established by reliable human research.
Although onion skins contain several plant compounds, this doesn’t demonstrate that homemade onion peel tea treats insomnia.
If you struggle with ongoing sleep problems, it’s important to investigate the possible causes rather than relying on an unproven remedy.
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18. Onion Peels, Antioxidants, and Heart Health Research
One of the most interesting things about onion skins is their quercetin content.
Quercetin is a naturally occurring flavonoid found in onions and various other plant foods. Scientists have studied it for its antioxidant activity and possible effects on cardiovascular health.
Some small human studies have investigated concentrated onion peel extracts and blood pressure, with promising but limited findings in certain groups.
However, these studies used standardised preparations rather than ordinary homemade onion peel tea. We cannot assume that drinking onion peel tea every day produces the same effects.
Similarly, although onion compounds have shown antimicrobial activity in laboratory settings, that doesn’t establish onion peel tea as a treatment for infections.
It’s also worth remembering that straining onion peels out of tea removes most of the solid material, so the drink shouldn’t be described as a rich source of dietary fibre.
Important: Onion peel tea should not be used as a substitute for blood pressure medication, antibiotics, or other prescribed treatments.
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A Note About Traditional Onion Peel Remedies
Traditional practices can offer fascinating insights into how people have used plants throughout history. They also provide valuable starting points for modern scientific research.
At the same time, natural preparations can cause unwanted reactions, and their effects may vary depending on the ingredients, concentration, and individual.
People who are pregnant, breastfeeding, taking medications, or managing health conditions should speak with an appropriate healthcare professional before using concentrated onion peel preparations for medicinal purposes.
The safest approach is to appreciate traditional knowledge while remaining open to what further research may reveal.
Creative Crafts and Natural Dyes Using Onion Peels
Onion peels aren’t just useful in the kitchen and garden. Their beautiful natural pigments make them an interesting ingredient for creative DIY projects.
Yellow onion skins can produce warm golden and orange-brown colours, while red onion skins may create different earthy shades depending on the materials and dyeing process.
Here are two lovely ways to experiment with onion skins.
19. Make Natural Fabric Dye With Onion Skins
Did you know you can use onion peels to create a homemade natural dye?
Onion skins have traditionally been used to colour fabrics, yarn and other natural fibres. It’s an inexpensive way to experiment with plant-based dyes while making use of kitchen scraps.
What you’ll need:
- A generous handful of clean, dry onion skins
- Water
- A saucepan suitable for craft dyeing
- Natural fabric, such as cotton, linen or wool
How to make onion skin dye:
- Place the onion skins in a saucepan and cover them with water.
- Simmer gently for approximately 30–60 minutes until the water develops a rich colour.
- Allow the mixture to cool slightly, then strain out the skins.
- Prepare your fabric according to the requirements of its fibre type.
- Immerse the fabric in the dye bath and heat gently as appropriate for the material.
- Allow the fabric to absorb the colour, checking periodically.
- Rinse carefully and dry away from direct sunlight.
Creative tip: Experiment with yellow and red onion skins to discover different shades.
Natural dye results vary according to the fabric, water, preparation and dyeing method. Some fibres need special preparation or a suitable mordant for better colour retention.
For safety, use dedicated dyeing equipment if you’re working with mordants or other textile chemicals, and follow their instructions carefully.
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20. Create Beautiful Naturally Dyed Eggs
Onion skins can also be used to create beautifully coloured decorative eggs.
This traditional craft produces lovely golden, copper and reddish-brown shades without artificial dyes.
What you’ll need:
- Clean yellow or red onion skins
- Water
- Eggs
- A saucepan
- Optional: Small leaves or herbs for decorative patterns
How to dye eggs with onion skins:
- Place the onion skins in a saucepan and cover them with water.
- Simmer until the water develops a rich colour.
- Strain out the peels and allow the dye liquid to cool.
- Carefully place the eggs into the dye bath.
- Cook the eggs until fully hard-boiled, then allow them to cool.
- Remove the eggs and admire their natural colours!
For a decorative effect, position small leaves against the eggshells and secure them with clean, food-safe material before dyeing.
Food safety tip: If you plan to eat the eggs, use only clean, food-safe ingredients and equipment. Refrigerate cooked eggs promptly, and avoid leaving them at room temperature for extended periods.
This is a lovely seasonal craft for families and a creative way to turn ordinary onion peels into something beautiful.
Final Thoughts on Reusing Onion Peels and Scraps
Who would have thought that something as simple as onion peels could have so many creative uses?
From making homemade vegetable stock and experimenting with natural fabric dyes to composting kitchen scraps and creating beautiful crafts, onion skins offer plenty of opportunities to reduce waste and make the most of everyday ingredients.
While some traditional onion peel remedies still need more scientific research, there are many practical ways to reuse these kitchen scraps without relying on unproven health claims.
The next time you’re preparing dinner, think twice before throwing away those papery onion skins. You might discover a new favourite way to use them!
Which of these 20 onion peel uses would you like to try first? Have you experimented with onion skins in your kitchen or garden? I’d love to hear your experience in the comments!
Looking for More Creative Ways to Reduce Kitchen Waste?
If you enjoyed these ideas, you might also love discovering:
- 20 Amazing Reasons to Keep Silica Gel Packets
- 21 Brilliant Ideas to Use Leftover Bread
- 20 Ways to Reuse Used Coffee Grounds
- Creative Uses for Pomegranate Peels
Small changes in how we use everyday materials can help us waste less and make more of what we already have.