Why are there are fine lumps on the surface of my powder foundation?

Fine lumps sometimes appear on the surface of pressed foundation. Granules or lumps such as these (they can even look black if they contain oil and water) are formed when the powder particles stick together. Don’t worry- they are not contaminants do not affect product quality. Powder foundation contains oil and moisturiser in addition to powder particles, to feel hydrating and adhere closely to the skin. Sometimes the pressure of using a sponge can cause the powder particles to clump together and harden. Make sure your sponge is as clean as possible, and don’t always apply pressure in the same place, but gently stroke the whole surface.