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I have read this M.A. question: What are the ways to get sweat stains out of a Gi? My gi is at least two years old (probably a lot older). It is an Adidas J800 (do)gi.

It is 30% polyester (800 g/m² polycotton) and cannot be washed warmer then 30 degreed Celsius. I wash it after every practice.

I would like it to be more white. It does not have stains, it is just a bit off-white, yellow. I dislike it so much that I even consider to buy a new one. But on the other hand it seems a waste to me because the gi's fiber is still ok. It is just the overall color. Especially in the collar. It just looks unhygienic to me.

I have tried washing it with Vanish and some detergent which is especially for white clothes.

A new judo gi will be over € 150,- so I would like to take a good look at my washing habbits, because this is not the first gi that became 'yellow'. Below are pictures of my 'should-be-white' gi with the washing-description.

My other gi which is 100% cotton has the same look.

ps. my sleeves seem to became shorter too, so maybe I just washed it too much and I have to just buy a new one?

edit I have found this online source http://www.budogi.co.uk/judo-gi-care-instructions/ and I do not iron my gi and just hang it to dry. I use liquid detergent (sorry for dutch link). Can Fabric conditioner be the cause of this yellow color?

j800 label collar gi washing description

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€150 seems really high for a Judo gi. Most of the ones I get are around £30/40... –  Sardathrion Nov 27 '13 at 13:48
    
size 185 and 800gr/m²? it is € 162,- nihonsport.nl/pakken/judopakken/adidas-judopak-j800-wit.html Mizuno is even more expensive nihonsport.nl/pakken/judopakken.html?brands=4 –  JP Hellemons Nov 27 '13 at 13:54
    
Nine circles has some (okay, they are Aikido gi...) for €50ish... Note that I am only affiliated with Nine Circles as a customer. –  Sardathrion Nov 27 '13 at 14:05

3 Answers 3

To clarify on the use of bleach, as long as it is non-chlorine based (like borax or OxiClean) you should be fine to use it. Chlorine bleach will yellow your non 100% cotton clothes but color safe or oxygen based bleaches should be fine.

Personally, I use baking soda (somewhere between 1/4 and 1/2 a cup depending upon your washer/load size/etc.) to keep my workout whites bright and it works well as a preventative measure (especially if you have hard water); you might need something stronger to remove the existing discoloration though, like the methods mentioned in Dave's answer. Some vinegar (1/2c to 2c again depending upon your washer/load size/etc.) could also help a little, though its more for preserving fabrics and softening them.

I would also like to add that how you dry your (do)gi can also affect its color. Air drying in the sun for a little while can help bleach it back to white. Plus it is much better for the fabric than using a dryer!

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You may have hard water that is yellowing them. I haven't had much success with reversing the process, but there are some palliative approaches like lemon juice, borax, and bluing agents.

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4 really nice suggestions, thanks, will take a look at them and will update this question with the results! –  JP Hellemons Nov 27 '13 at 14:29

Adding some bleach to the wash might make a difference. If it was 100% cotton, I would recommend it but 30% polyester might do something strange...

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I also have emblems on my shoulders which might be bleached then? nihonsport.nl/media/catalog/product/cache/1/image/… I don't mind an experiment by the way. I have probably have to buy a new gi anyway. –  JP Hellemons Nov 27 '13 at 13:57
    
Yes, the emblems will be bleached as well unless you remove them first. You could do some clever bleaching in a bucket but that will leave you with a yellowish halo around the emblems. –  Sardathrion Nov 27 '13 at 14:06
    
Bleach is generally contraindicated for washing grappling gi, since it weakens the fabric. –  Dave Liepmann Nov 27 '13 at 14:15

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