A clean sink or bucket
The bras you need to wash, separated into light and dark colours because you’ll want to wash them separately
A tap/ shower head
You might find it easy to put it in the bath or shower so you can easily pour the water out.
Your bras are like goldilocks here - not too hot and not too cold with the water.
Make sure the water level can cover the undergarments you’ll be washing and you’ve got enough water so you can move them around.
Most delicate detergents are super concentrated so you don’t need to use very much each time you wash, which means the bottle can last you years!
Mix the soapy liquid around for even distribution.