The product box is quite simple. Volume 30 ml. This volume was enough for me for about 2 months, so we can assume that the consumption of serum is quite economical. Serum is applied using a handy pipette and is well distributed on the skin. After application of the agent there is a feeling of stickiness on the skin.The manufacturer claims serum as a treatment. I think these are not empty words, as there are fewer lesions on the skin, acne marks heal faster.