By finding this article I thought to find a great accessory to avoid wasting water while bathing. I've had exactly one month and it still does not hold water ... When there was a little water, it rises, in one way or another. It's not for lack of trying every day because some reviews said it needed a little time for the product to take shape and be truly effective. After 30 days I will start not belabour and confess that Babydam is indeed useless. Ps: my bathtub yet has an ideal form.