If a therapist washing multiple loads of laundry a day, I read the IRS only allows( $1 per load to wash dry and press), (cost closer to $2.50 a load) am I misreading it?

Where exactly did you read that?  And whose laundry are you washing?

read it from etax.com site which is why I came here to ask.  massage clients sheets and towels .

It looks like you weren't on etax.com, you were on etax.com.au.
<a rel="nofollow" target="_blank" href="https://www.etax.com.au/laundry-expenses/">https://www.etax.com.au/laundry-expenses/</a>

So if you were in Australia paying Australian income tax, that would be limited to $1 per load.   🙂

@TaxGuyBill  Good find!
and an Australian dollar  = 78 cents USA

Yes Thank You. My oversight.

The IRS does not set a dollar amount for that.

You can deduct the actual business expense.

Right, but if you are doing this at home, you have to figure out the cost of the detergent, hot water, electricity/gas, etc etc. for just those loads.