The answer is a clear no. Both have unique properties and modes of action. Ceramides are natural lipids (fats) found in the cell membranes of the skin. They make up about 50% of the skin's lipid barrier and are crucial for maintaining moisture and the skin barrier. Niacinamide, also known as vitamin B3, is a water-soluble vitamin that offers a variety of benefits for the skin. It improves skin elasticity, strengthens the skin barrier, reduces inflammation, and regulates sebum production. Niacinamide is known for its ability to reduce hyperpigmentation and even out skin tone.