liquid serum transparent white (proves its freshness) to apply all over the face properly cleaned in the morning avoiding the eye contour. 2 or 3 drops are enough; as soon as the serum is on the skin, it penetrates immediately and we see the difference because the action is simultaneously reduced wrinkles, smoothing skin refined. Even after 1 minute then put proper hydration is over Hydra 5 B complex (scheduled for start-up kit with this serum) and either 1 or moisturizer (moisturizers in the same brand are top too) that are high performance products and good quality (I have very sensitive skin) ideal for cure, skin mature.Son downside: the price ...