Unless you’re totally into free-boobin’ then you should be wearing a bra every day. Unlike our other undergarments, namely underwear, bras don’t need to be washed after every single wear. But if they don’t need to be washed every day, how often should we be washing our bras?
You should typically wash your bra every 3-5 wears or a minimum of once per week. However, if you excessively sweat on a paritcular day (in the summertime especially) then you should wash it before the next wear. That rule also applies to sports bras…obviously.
If you never wash your bras, then I highly suggest throwing them into your next wash. Bras can harbor tons of bacteria, dirt, oil, etc. that will be in close contact with your skin. It’s also important to note the amount of detergent you use when washing bras. Too much detergent can break down the fabric and the elasticity of your bra, therefore it won’t last as long.
Your best bet is to invest in a few good bras to rotate during the week.