How do I make DIY shower cleaner using vinegar & dawn dish soap?

50/50 mix of the 2, nothing else.

Baking soda can be added as a very mild abrasive if you wish, Carolyn.

I would add equal parts of everything including water

Hi Carolyn, this may help you

https://www.youtube.com/watch?v=ZpJ5JkLmgho

I mix 1 cup of vinegar with 3/4 cup of blue dawn dish soap and heat it in the microwave for exactly 1 minute. With a fan on in the bathroom, I wipe it all over the walls including the glass doors and let it set for a good hour. Then with a squeegy used for windows and the shower water, I rub it down quickly and squeegy the glass and walls clean. The actual application and rubbing down with water takes all of about 5 minutes. The waiting takes the longest but I do other things while waiting. It is the EASIEST way I have ever found, but you do need the fan turned on while working.