Dr.Different Ceq Anti-Oxidant Serum - Anti-Blemish Brightening Serum Containing 15% Pure Vitamin C (2 X 15 ml)

Dear Customer, Hello, you can apply it to the entire face, avoiding contact with the eyes. Happy Sunday.

Dear Customer Hello, this is not a requirement. However, it will be more efficient if used. Happy Sunday.

Dear Customer Hi, Yes the product should be refrigerated once opened. Happy Days.

Dear Customer, Hello, It is available. Even this duo is a logical combination if the goal is blemish/tone even. If the tretinoin you're using is in cream form, you can use CEQ Serum first, followed by the tretinoin cream. It is recommended to support with SPF 50+ sunscreen after using it in your morning routine. Happy Days.

Dear Customer, Hello, the product can be used day or night. We recommend using it with sunscreen during daytime use. As for the cream, the cream and mask of the CEQ series will also be available for sale in a few days. You can choose it if you wish. Happy Evening.

Dear Customer, Hello, it is recommended to use it before sunscreen and moisturizer during daytime use. It is true. Happy Days.

Dear Customer, Hello, the product does not cause clumping. Happy Days.

Dear Customer Hi, Yes these products can be used together. It is quite effective in terms of dual illumination and especially anti-spot care. Happy Days.

Dear Customer Hello, Start by cleansing your skin with a gentle cleanser. Balance your skin's pH by wiping it with a toner. Apply a few drops of serum to the palm of your hand and gently massage it onto your face and neck. You can apply moisturizer to trap the serum in your skin. If you use the product during the day, you can use sunscreen as the last step. Take care to use it regularly for best results. Happy Week.