I bought several bars of dettol soap for myself and my family. To be truthful it does what it says. its moistures clears the skin and also it is treating my pimples slowing.
I normally use it twice a day. Just wet my face with Luke warm water, then make a lather of soap in my hands and then wash my face. I would not recommend any one to rub soap in a face towel to clean the face as it irritates the skin especially if you have sensitive skin.
Earlier I used to use a anti-bacterial shower gel, but they are so expensive and thin on the ground to find, then I discovered Dettol did a soap bar that did the same job at half the price, I always feel refreshed after taking a shower and washing with the soap.