The user's roll: Farmaceut på Lyko. 2 weeksThe comment was made 2 weeks
Hi Mathilda Johanna😊
Thank you for your question✨
It is not recommended to use COSRX Vitamin C 23 Serum together with retinol or retinal in the same routine, as both are active ingredients that can irritate the skin when combined.
For best results, you can use vitamin C in the morning and retinol/retinal in the evening – or alternate between them on different days.
If retinol is new to you, gradually introduce it 1-2 evenings a week and don’t forget sunscreen during the day.
I hope my answer can be helpful and that you have a lovely day🌞