Still washing my hair with baking soda and loving it. I found a container at the thrift store with a screw on lid. My husband drilled holes in the lid for me. I use it for applying the baking soda more evenly to my hair. Before, I was using a plastic water bottle, but the water came out too fast. Now, it pours on at just the right rate. I open the lid and add about a cup of water then replace the lid and swirl it around to mix in some of the baking soda. Then apply it directly to my wet hair in the shower. It works wonderfully. When the baking soda gets low in the bottle, I refill it to about 2/3 full. You need to leave space at the top for the water to mix and stir-up some of the soda. You can experiment and see what works best for you.