Hi! Thanks for your query. Some soaps have stronger detergents than others or higher concentrations of surfactants. All of them, including liquid body washes, include at least one surfactant, preservatives, emulsifiers, moisturizing agents, and probably a fragrance. If you have sensitive skin you should avoid synthetic fragrances and harsh detergents. Stay away from antibacterial or deodorant soaps too, since your skin may be intolerant to the added chemicals in them. Antibacterial soaps are very effective in fighting folliculitis or back acne, but they are extremely drying. Liquid soaps aren't necessarily gentler or more moisturizing. Liquid is simply the vehicle. Some bar soaps provide the waxy emollients your skin needs to prevent more flaking and dryness.