Celery juice contains potassium and vitamins that will benefit your body. (A, C, K) Celery juice, which is useful in dispersing inflammation in your body, can also reduce hydration. However, celery juice can be quite dangerous when you want to use it for detoxification. Because it can disrupt your body's nutritional balance as it will cause nutrient deficiency and calorie restrictions. If you are going to detox regularly, there is no obstacle to using celery juice once a week.