Important fact I learned somewhere that has been a serious life safer:
Your own saliva will remove a stain of your own blood.
I learned this in costuming as a tip for in case a male actor gets a bit of blood on his shirt from shaving and MY first thought was ‘what about menstruation blood tho’?
it totally works
if you are a uterus-owner please PLEASE remember this tip! You get a sudden stain on your pants? You got a spot on your fave white undies? You out in public with your friends and you spot and you can’t elegantly bail to change clothes cause you happen to be in fucking disneyland? (seriously it happened to me)
while the blood is still wet literally spit as much saliva as you can on the spot and work it into the fabric with your fingers then dab with toliet paper. This obviously works best with small spots but can lessen the darkness/colour on a larger spot if you do it right. Obvs your clothes will still need to be washed but its a LIFESAFER in tight situations!!! Pass this info along!!!