Yellow sweat marks on clothes and how to remove them
Short answer: Yellow sweat marks appear when sweat and residue from deodorant or cream stay in the fabric and change colour over time. You can usually reduce them by treating the mark early, washing by the label and not drying the clothes hot until the mark is gone.
Why sweat can leave yellow marks
Sweat itself is almost clear, but when it mixes with residue from deodorant, cream and the skin's oils, it can settle into the fibres and change colour. It happens mostly under the arms, where clothes sit close and it gets warm, and it becomes clearer over time.
Where the marks typically sit
The yellow marks are most often seen under the arms and at the collar, where the fabric touches the skin and often rubs. On light T-shirts they are easiest to see, and you can look at bamboo T-shirts for men, where pale colours often show the most.
Treat the mark as soon as you see it
The sooner you treat a mark, the easier it is to remove, so rinse the clothes in cold water and rub gently with a little mild detergent. Let it work for a while and rinse again before washing as usual by the care label.
What you should not do
Avoid heat before the mark is gone, because high temperatures can set the mark in the fabric. Do not use strong products without checking the label either, and always test on a hidden spot so the colour and fabric do not suffer.
Washing, drying and repeated attempts
If the mark is still there after washing, repeat the treatment before the clothes are dried and wash again by the label. Hang the clothes to dry instead of using the tumble dryer until you are sure the mark is gone, so you do not set something that can be removed.
How to prevent the marks
Let the deodorant dry before you put clothes on and do not use more than you need, so no residue builds up in the fabric. Change clothes when you have sweated a lot, and wash T-shirts after every wear, so sweat and residue do not stay in.
Clothes, socks and other wash days
Sweat does not only settle in shirts but also in socks and other clothes that sit close to the skin. See all bamboo socks for men and wash them after every wear so sweat and damp do not stay in the fabric.
Tank tops and clothes without sleeves
Tank tops and sleeveless tops have less fabric under the arms but can still get marks at the armhole. See the bamboo tank top for men and wash it after every wear so it stays smart and fresh.
Frequently asked questions
Why does sweat turn yellow on clothes?
It is usually because sweat mixes with residue from deodorant, cream and the skin's oils, which settle in the fabric and change colour over time.
Should I dry the clothes hot when the mark is there?
No, avoid heat until the mark is gone, because heat can set it, so hang the clothes to dry instead.
How do I prevent yellow marks?
Let the deodorant dry before you dress, do not use too much, change clothes after heavy sweating and wash T-shirts after every wear.
You can find the full range at Bamboo-Clothing.com.
