Putting a dry towel in the dry does help the clothes dry faster.
When you put a dry towel in the dryer with the clothes, the dry towel helps to absorb any excess moisture in the clothes which reduces humidity in the dryer and allows for better air circulation.
As a result the dry towel added to the dryer with the clothes helps to speed up the drying process of the clothes.
Adding a dry towel to the dryer with your clothes also helps the clothes to fluff up and separate the clothes and prevents the clothing from clumping together.
I use a dry towel in my dryer and it really does help and it saves me on electricity as the dryer doesn't have to run as long to dry the clothes.
The dry towel also adds bulk and breaks up clumps of wet clothes and allows the hot air to circulate through the wet clothes better and more efficiently which speeds up the drying time.
The dry towels wicking fibers also wick away moisture from the wet clothes and helps to separate the clothes and prevents the clothes from sticking together.
Simply load the dryer with the wet clothes as you normally would.
Then add a clean, dry towel to the dryer along with the clothes and then start the dryer and allow it to run for a few minutes such as 5 to 15 minutes.
Then you can remove the towel and then allow the dryer to finish drying the clothes.