Your gi earns its wear one hard round at a time. Sweat, mat grime, skin oils, and bacteria build up fast after drilling, sparring, and open mat. Knowing how to wash a bjj gi correctly protects more than the fabric - it helps you show up to training clean, confident, and ready to work.
A quality gi is built for pressure, grips, and repeated washes, but it still needs the right care. Wash it too hot, overload it with detergent, or leave it trapped in your gym bag, and even premium gear can shrink, stiffen, fade, or develop a stubborn smell.
How to Wash a BJJ Gi After Every Training Session
The best time to wash your gi is as soon as you get home from class. If you cannot start a load right away, take it out of your bag immediately and hang it somewhere with airflow. Never leave a damp gi balled up in your car, laundry basket, or closed gym bag overnight. That is how odor gets deeply set into the cotton.
Before washing, empty the pockets if your gi has any, close any hook-and-loop patches or closures, and turn the jacket and pants inside out if you want to reduce abrasion on embroidery and patches. Separate your gi from towels, jeans, and items with zippers. Those heavier or rougher fabrics can pull at the weave and leave lint behind.
Wash your gi with other martial arts uniforms or similarly colored training gear when possible. A white gi should generally stay with whites, especially for its first few washes. Dark blue, black, and colored gis should be washed with like colors to limit fading and dye transfer.
Use cold water as your default. Cold water helps preserve color, reduces the risk of unwanted shrinkage, and is usually enough when you wash the gi promptly after training. Choose a normal or heavy-duty cycle based on how dirty the uniform is, but avoid unnecessarily aggressive settings if your gi is not heavily soiled.
Use the Right Detergent, Not More Detergent
A standard liquid laundry detergent is usually all you need. Follow the amount recommended on the bottle for your load size and water level. Adding extra detergent does not make a gi cleaner. It can leave residue in the fabric, make the material feel stiff, and trap odors over time.
Avoid fabric softener. It may make cotton feel softer for a moment, but it coats fibers and can reduce the gi's ability to rinse clean. That coating also tends to hold onto sweat and odor. Your gi does not need to feel silky. It needs to be clean, durable, and comfortable enough to move freely under pressure.
Skip chlorine bleach unless the care label specifically permits it and you understand the risk. Bleach can weaken cotton fibers, yellow white fabric, damage stitching, and fade colored gis. For a white gi with persistent dinginess or odor, an oxygen-based bleach designed for laundry can be a gentler option. Always follow its label instructions and test caution with patches, embroidery, or colored trim.
A small amount of white vinegar in the rinse cycle can help with lingering smells for some athletes. Do not mix vinegar with bleach or other cleaning chemicals. If the odor keeps returning, the issue is usually not a lack of additives - it is waiting too long to wash the gi or not letting it dry completely.
What Water Temperature Should You Use?
Cold water is the safest all-around choice, particularly for a new gi, a colored gi, or a uniform that already fits exactly how you want it. Many BJJ gis are pre-shrunk, but pre-shrunk does not mean shrink-proof. Heat can still tighten cotton fibers over time.
Warm water can be useful occasionally for a very dirty white gi, but check the garment's care instructions first. It is a trade-off: warmer water may provide extra cleaning power, yet it also raises the chance of shrinkage and color loss. If your sleeves and pants are already close to your preferred length, stick with cold.
If you intentionally need a new gi to shrink slightly, use controlled heat carefully and in small steps. One overly hot wash or dryer cycle can take a gi from competition-ready to unwearable. Fit matters in Brazilian Jiu-Jitsu, so do not gamble with it.
Dry Your Gi Without Shrinking It
Air drying is the safest way to protect the size, color, and lifespan of your gi. Hang the jacket and pants separately on a sturdy rack or wide hangers in a well-ventilated space. Spread out thick areas such as the collar, seams, and waistband so they can dry fully.
Avoid leaving your gi in harsh direct sunlight for extended periods. A little sun is not a disaster, but repeated intense exposure can fade colored uniforms and make cotton feel rougher. Indoor airflow, a fan, or a shaded outdoor area is usually a better choice.
A dryer is where many gis lose their fit. High heat can cause major shrinkage, especially in the sleeves, pant length, and dense collar. If you must use a dryer, choose the lowest heat setting and remove the gi while it is still slightly damp, then finish drying it on a rack. This is still a risk, particularly with a new gi, so air drying remains the stronger long-term move.
Never put away a gi that is even slightly damp. Moisture trapped in the thick collar or waistband can create odor and mildew. Give it the extra time it needs before folding it into your training bag.
How to Remove Stubborn Gi Odor and Stains
If your gi smells clean when it comes out of the washer but sour when it gets warm during class, it needs a deeper reset. Start by soaking it in cold water with an odor-fighting laundry product or a small amount of white vinegar, then wash it normally with detergent. Make sure the washer itself is clean too. A machine with buildup can transfer odor right back into your gear.
For blood, grass, or food stains, treat the area before washing. Rinse blood with cold water, not hot water, since heat can set the stain. Apply a laundry stain remover according to its directions, let it sit for the recommended time, and then wash the gi. Avoid aggressive scrubbing on patches and embroidery.
Persistent odor can also come from the belt, rashguard, or compression shorts packed beside the gi. Wash those items after training as well. Your belt may carry tradition, but it also touches the same mats, sweat, and training partners as the rest of your uniform. Follow your academy's customs, but from a hygiene standpoint, a clean belt belongs in a clean training kit.
Simple Gi Care Habits That Pay Off
Your laundry routine is part of your training routine. Keep a breathable mesh bag for sweaty gear if you cannot wash it immediately, but transfer everything out as soon as you get home. Rotate between two gis if you train several days a week, giving each one enough time to wash and dry fully.
Inspect your gi after washing for loose threads, torn seams, and worn patches. Small repairs are easier before they become a ripped sleeve during live rounds. A well-maintained gi looks sharper, lasts longer, and lets you focus on your technique instead of worrying about your equipment.
Train hard, wash promptly, and give your gi the same disciplined care you bring to every round. A clean uniform is one more way to respect your teammates, protect your progress, and arrive ready for the next challenge.
