Always read and follow the care instructions and any warnings on the garment label. And, follow the General Rules for washable fabric stain removal.
Soak the entire garment in a dilute solution of all-fabric powered bleach. Check the garment care label and check for color fastness first. And, be aware that during soaking all colors may be lightened.
If the stain remains and the garment is colorfast, soak the entire garment in a dilute solution of liquid chlorine bleach and water. Again, test for colorfastness first.
Caution: Chlorine bleach may change the color of the garment or cause irreversible damage. Therefore, it is important to check for color fastness before using. If the stain does not come out within 15 minutes of bleaching, it cannot be removed by bleaching, and any further exposure to bleach will weaken the fabric.
Note: To check for color fastness to liquid chlorine bleach, mix 1 tablespoon of bleach with 1/4 cup of water. Use an eyedropper to put a drop of this solution on a hidden seam or pocket edge inside the garment. Let it stand two minute, then blot dry. If there is no color change it is safe to use the product. Powered bleaches have directions for doing colorfastness tests.
There are also a number of dye removers/strippers, such as one from Rit, which are available in drug and grocery stores. However, color removers will also take out fabric colors as well as the stain.
ZYIA - Item 793 - Black Brilliant Hi-Rise Leggings 28
The most versatile of all workout clothing, our brilliant performance legging reigns supreme. The high, structured waistband comes right to your bellybutton and won't dig, pinch, or tug as you move. Flat-serged seams inside and out— plus 25% Spandex content—provide the wear-all-day comfort you demand from a quality legging.
ZYIA - Item 613 - Black Havana Tank
Incredibly lightweight and breathable, our Havana tank uses four-way stretch fabric and has superior sweat wicking. It is striped with small lines of breathable mesh from top to bottom for maximum ventilation—this top will help you feel as chill as its louvered styling makes it look.