Commercial soaps are often deemed harmful because of chemicals and synthetic ingredients. These can cause skin problems such as irritation, dryness, and allergies. Harmful ingredients in commercial soaps include parabens, phthalates, propylene glycol, and triclosan, which have been linked to hormonal disruption, skin aging, and cancer. Unlike natural soaps, commercial ones strip the skin of its natural oils and moisture, causing dryness and potential long-term damage.