I use a mixture of water and muratic acid, works well.
Because Vitamin C contains ascorbic acid
the acid
CRABS OF COURSE.
As the lesions clear up, they usually leave a brown discoloration behind, especially in dark skinned people.
to remove brown stains from your teeth you will have to brush them or floss them...
Remove the blue.
cuz he burnt them.
Christopher Maurice Brown
It is possible steam from the shower or bath is condensing on the ceiling and causing discoloration.
Having to many sodas, honey, malasses ,or brown rice and maple syrup causes a brown tongue.
When selecting bok choy from the market, look for firm stalks without any brown discoloration. Make sure the leaves are crisp and not wilted.
Hand-picking or pruning from branches and raking or using a leaf-collecting/leaf-removing machine are ways to remove brown leaves. A few browned and browning leaves still on an herbaceous or woody plant may be removed manually whereas a complete section on a shrub probably responds best to pruning equipment.