We've been using the shampoo and soaps for a while now. We love the ease of a shampoo block and the body soaps are really good. Waste is minimised.
The bonus for us (we're in our 70s) is that the shampoo doesn't make the shower tiles slippery like bottled shampoo did. A lot safer. Less soapy residue in soap dish too.
Plus the stubborn soap scum build up on the tiles is clearing.