Using this Bioaqua air cushion BB cream is easy. First, gently press the puff onto the cushion to pick up the product. Then, evenly apply it on your face, starting from the center and spreading outwards. For best results, make sure your skin is clean and moisturized before application. When you're done using it, keep the air cushion in a cool and dry place. Also, remember to clean the puff regularly to avoid bacteria buildup. If you have sensitive skin, it's a good idea to do a patch test on your wrist first to check for any allergic reactions.