The sponges are high quality and will evenly distribute your foundation or powder instead of "sucking up" all over your expensive cosmetics into the sponge. The shapes and their surfaces will help with your different cosmetic products. The flatter surfaces will work best with fuller coverage type products like foundations, powders and creams while the tip or pointy edges will help with concealer or direct coverage around hard to reach areas like around the nostrils, eyes and lips. The sponge is latex and odor free and is non-allergenic. Using your fingers to blend in your makeup