UGG boots are known for their plush comfort, natural materials, and relaxed fit. However, many owners wonder whether washing them will damage their boots, especially after spills, stains, or heavy wear. While cleaning UGG boots is possible, washing them incorrectly can lead to shrinking, misshaping, and long-term material damage.
This guide explains how washing affects UGG boots, why machine washing is risky, and the safest methods to clean and maintain them. It also answers common questions about shrinking, reshaping, and caring for sheepskin footwear so you can keep your boots looking and feeling great.
Can Washing UGG Boots Cause Them to Shrink?
Yes, washing UGG boots can cause them to shrink, especially if they are exposed to heat, excessive water, or strong agitation. UGG boots are made from natural sheepskin and suede, which behave differently from synthetic materials. When these materials absorb water and are exposed to heat, they can contract and stiffen.
Research into leather and sheepskin fibres shows that natural fibres shrink when exposed to heat and moisture due to structural changes in the collagen fibres. This is similar to how wool garments shrink in hot water.
- Sheepskin fibres can contract when heated and saturated with water.
- Hot water and tumble drying significantly increase the risk of shrinkage.
- Mechanical agitation can distort the boot structure.
Why Machine Washing UGG Boots Can Damage Them
Putting UGG boots in a washing machine may seem convenient, but it is one of the most common causes of permanent damage. Washing machines combine water, heat, and mechanical movement, which can be harsh on delicate natural materials.
Shrinkage and Warping
Heat and water can cause sheepskin to shrink by up to 30% in extreme cases. Even a small amount of shrinkage can make boots feel tight or uncomfortable.
Loss of Shape
Agitation during the wash cycle can twist and collapse the boot structure. This can result in boots that appear slumped, creased, or uneven.
Stiff and Brittle Suede
Sheepskin contains natural oils such as lanolin, which keep the fibres soft. Washing strips these oils, leaving the suede stiff and more prone to cracking over time.
Flattened Wool Lining
The plush wool lining inside UGG boots can become matted and clumpy when soaked and agitated. This reduces cushioning and affects comfort.
Sole Separation
Water saturation and high-speed spin cycles can weaken the adhesive that bonds the sole to the upper. Over time, this can cause the sole to detach.
How to Clean UGG Boots Safely Without a Washing Machine
Cleaning UGG boots by hand is the recommended method for maintaining their appearance and extending their lifespan. Gentle care helps preserve the natural materials while removing dirt and stains.
Step 1: Brush Off Dirt
Use a suede brush to remove loose dirt and dust. Always brush in one direction to avoid damaging the nap.
Step 2: Lightly Dampen the Surface
Use a sponge and cold water to lightly dampen the outer surface. Avoid soaking the boots, as excessive water can affect the structure.
Step 3: Apply a Sheepskin Cleaner
Use a specialised sheepskin cleaner or a mild detergent diluted with water. Gently work the cleaner into the surface with a sponge.
Step 4: Rinse Gently
Wipe away residue with a clean, damp cloth. Avoid running the boots under a tap or submerging them.
Step 5: Stuff and Air Dry
Stuff the boots with paper towels or newspaper to help them hold their shape. Allow them to air dry away from direct sunlight or heat sources.
What Happens If UGG Boots Already Shrunk?
If UGG boots have already shrunk or lost their shape, they may still be salvageable depending on the extent of the damage.
Reshape While Damp
If the boots are slightly damp, stuffing them firmly can help restore their shape. This works best immediately after washing.
Restore the Suede Texture
Once dry, use a suede brush to lift the nap and restore the velvety texture.
Wear Them to Relax the Fit
If the boots have only slightly shrunk, wearing them for short periods can help the sheepskin relax and adapt to your foot shape.
Common Questions Readers Ask About Washing UGG Boots
- Can UGG boots go in the washing machine on a delicate cycle?
- Do UGG boots shrink in cold water?
- How often should UGG boots be cleaned?
Do UGG Boots Shrink in Cold Water?
Cold water reduces the risk of shrinkage compared to hot water, but it does not eliminate the risk entirely. Water saturation and agitation can still distort the shape of the boots, especially if they are spun at high speed.
Even when using cold water, natural sheepskin can stiffen as it dries, particularly if it dries too quickly or near a heat source.
Can You Tumble Dry UGG Boots?
Tumble drying UGG boots is strongly discouraged. Heat and tumbling can cause severe shrinkage, cracking, and permanent distortion. Natural sheepskin and suede are sensitive to high temperatures, which can alter the structure of the fibres.
How Often Should You Clean UGG Boots?
UGG boots do not need frequent deep cleaning. Regular brushing and spot cleaning are often enough. Deep cleaning should only be done when necessary, such as after heavy staining or odour build-up.
Applying a water and stain repellent spray can reduce how often deep cleaning is needed.
Key Takeaways for Caring for UGG Boots
- Avoid machine washing to prevent shrinkage and misshaping.
- Use cold water and gentle hand-cleaning methods.
- Air dry away from heat and direct sunlight.
- Brush suede regularly to maintain texture.
- Stuff boots while drying to preserve their shape.

Why Proper Care Extends the Life of UGG Boots
UGG boots are made from premium natural materials that respond to how they are treated. With gentle cleaning and proper drying, they can maintain comfort, shape, and appearance for many seasons.
Natural sheepskin adapts to the wearer’s foot over time, providing a personalised fit. Avoiding harsh washing methods helps maintain this adaptability and keeps the boots comfortable.
Final Thoughts: Should You Wash UGG Boots?
Washing UGG boots in a machine carries significant risks, including shrinkage, warping, and material damage. Hand cleaning with cold water and gentle products is the safest way to keep them clean.
By following the recommended care steps, you can preserve the softness, shape, and durability of your boots while keeping them looking fresh and comfortable.


