wetter foam = better foam
Foam forms when bubbles rise to the top of a solution. At first the bubbles are round and trap liquid in the corners where the bubbles don't touch, making a wet foam. These bubbles slip past each other easily, so wet foam is very pliable. The trapped liquid makes the wet foam heavy.
Then trapped liquid drains from a wet foam. The foam becomes dry, and the bubbles change shape so they touch other bubbles in all directions. Dry foam is brittle, because the bubbles aren't lubricated any more. Dry foam can become so light you can see thru it.
Surfactants concentrate at surfaces, so the material in foams concentrates as the foam dries. Eventually it can become concentrated enough to sting eyes.
tiny bubbles in the tub
My invention makes smaller bubbles than do typical bubble baths, and my foam stays in the wet stage much longer. As a result, my foam doesn't pile as high as others, but it can be played with easily without breaking, and it doesn't sting eyes. It also looks and feels creamier.
Do users care? See what one consumer wanted. (The Grand Clavister has changed his address since then, and Petite Nate was never this foamy.) Liralen Li in her blog tells how she appreciated my foam's superior quality.
In blind tests, people prefer the quality of my foam to that of other foaming products. My invention's foam is so fine, it's like a soap lather. Other comments: