Yes, because seaweed has many other functions, and whitening is only a small part of them. Its main function is to replenish water and remove spots. If you really want to whiten, I suggest you put some milk and pearl powder (pearl powder is enough for beauty), which is more effective than ordinary seaweed mask opened with water! If you have time and energy, I suggest you do it for three days at first, and then you can do it every other day. Also, whitening our skin is not enough. Before going to bed 15 minutes, you can apply protein to your face and wash it with warm water when you sleep. This will not only make your face firm and elastic, but also give your face a great rest.