Depending on a person’s body chemistry, the actual dye of the garment can be altered! For example, in a dark blue shirt, a perspiration circle might appear pink, where’s as on a red silk blouse it may look yellow or orange. These changes in color happen over time, but once they do, they are permanent! Because the perspiration is not a stain but actually acts as a mild bleach, removing the dye from the garment. On white garments, the perspiration stains can appear yellow, yellowing more and more, as the perspiration is left in the clothes without cleaning.
Overall, a great rule of thumb is to dry-clean your garments as soon as your realize there are some perspiration marks. It is always recommended that you wear deodorant, but if you are a heavy sweater, underarm seals may be necessary to keep your clothes looking good for as long as possible.
Garment Care is very successful in getting perspiration stains out, but can guarantee better results upon receiving the garments earlier rather than later!