L’Oréal ParisEverPure Cleansing Balm, 16.9 Fluid Ounce

Which is better, this or the EverCreme balm?

Is this both a shampoo and conditioner, is it good for itchy, flaky dandruff, is it for both genders, is it safe on chemically straightened hair?

Will this wash styling products (hairspray, dry shampoo, gel, etc.) out of hair?

Is there some trick to opening this? Sometimes I spin the top around to the left and it pops up but other times is just spins and spins.