Step 1: Squeeze a dollop of cosmetic brush shampoo into a glass or a mug and fill with lukewarm water.
Step 2: Swirl your brushes in the water and gently massage the tips.
Step 3: Rinse the bristles with clean water.
Step 4: Carefully squeeze out the excess moisture with a clean towel.
Step 5: Reshape the brush head and lay flat.
Step 6: Let the brush dry with its bristles hanging off the edge of a counter, allowing it to dry in the correct shape. Never let your brushes dry on a towel — the bristles can become mildewed.