It's important to wash your lingerie regularly to maintain suppleness of the fabric. I recommend washing your bras after every 1-2 wears, and panties after every wear, obviously ;)
Hand washing is THE gold standard for the longevity of pretty much all your clothes, but especially delicates (aka: lingerie). However, we don’t always have time for that! I’m here to tell you that it is perfectly fine to throw your bras and panties in the wash. Be sure to wash on cold (Cold-Cold, not Hot-Cold, if your machine does that) and preferably the gentle cycle. Bonus points if you throw them into a delicates bag. Please DO NOT put them in the dryer! Always hang dry or lay to dry on a flat surface.
*Washing your clothes using only cold water and skipping the dryer is also much less energy intensive. It’s a great way to reduce your consumption and costs!
Elastic can be finicky and needs time to recover after being stretched for a prolonged amount of time. To keep it supple, I recommend alternating your bras, and not wearing the same one every day. If you do, you’ll start to notice some wear in the form of ruffling or puckering, which, unfortunately cannot be reversed. At a certain point, this is inevitable, just as we all age and get wrinkles—so think of it as skin care for your bra! (maybe?) And give your favorite bra a break! Or buy multiples and alternate them.
There was a time when I would only buy black underwear because I was so tired of all of my panties having bloodstains on them. That was until my friend Rose told me about her trick:
Catch the stain as quickly as possible if you can, and immediately soak it (unwashed) in Hydrogen Peroxide. Give it a scrub with an old toothbrush or just rub the fabric together, then rinse with water. Repeat until the stain has faded or disappeared. It’s important that you catch the stain as soon as possible. I have washed my underwear and then tried hydrogen peroxide and it simply doesn’t work as well.