Real Techniques Sponge+ Miracle Complexion Sponge is a 3-in-1 multi-functional makeup blending sponge for applying foundation and is ideal for liquid foundation. You will have your best glow yet! The Miracle Complexion Makeup Blender Sponge is the #1 makeup sponge for smooth foundation application and is designed with revolutionary latex-free foam technology that fights off everyday growth of bad stuff that comes from old makeup, dead skin cells and more.