I use the soap again and again. I found this soap when I have been living in Canada. I have used normal shampoo which name is very famous before but it's too much strong to hair... it made my hair to be dry... so I searched what ingredients is good for hair or body. Someone said amino acid is gentle for skin then I bought this soap. Actually I didn't think that I wash my hair. Just tried to wash my hair suddenly. After that, my hair is smooth and feels good!! I recommend cerave soap if your hair is dried by shampoo. I love cerave products!!! Really thanks:)