Using your WOKO foundation brush is super easy. First, dip the brush into your foundation, whether it's liquid, cream, or BB cream. Then, start applying it to your face in gentle, circular motions. This will help blend the foundation evenly for a smooth finish. When using it with concealer, you can be more precise to cover any blemishes. Remember, don't press too hard on your skin as the synthetic hair is soft and can do the job without much force. As for maintenance, after each use, rinse the brush under lukewarm water with a mild shampoo. Gently squeeze out the excess water and reshape the brush. Let it dry flat or hanging with the bristles down. This will keep your brush in great condition and ensure it lasts a long time.