For light coverage, dampen sponge with water, squeezing out any excess before makeup application. For full coverage, use dry. Divina's tip: Over time, the sponge can hold product residue and bacteria, which can lead to breakouts and skin irritation. Proper sponge cleaning enhances hygiene and can extend the life of your blender for better makeup application and finish. Clean your makeup sponge often with warm water and mild soap.