I am delighted with the SkinCeuiticals serum, both CE Ferulic and Phloretin CF, the effects are visible, the complexion is visibly rejuvenated, taut and fresh.I didn't have to wait long for the effects of this serum - after three days the skin gains radiance, is smooth, taut, firm and fresh, simply rejuvenated. It tightens the pores and brightens the complexion. It leaves a subtle film, which is in no way uncomfortable. It is not comedogenic, does not make the skin oily. The serum works well with other creams. It worked very well at night and during the day. The packaging and pipette are made of glass. The dark glass vial protects against light and oxidation, the pipette is very precise and efficient.