Calendula itself is best known for its natural anti-inflammatory, anti-bacterial and healing benefits, so it's great for rashes, scratches, eczema, psoriasis, chapped skin, insect bites and damaged skin. In soaps, Calendula is gentle to the sensitive skin and helps soothing irritated, itchy and dry skin. 
 
Many herbs turn dark after a few weeks in the soap, but calendula herbal soap will hold its color very well for a long time.