3. Three is the magic number. While there is no limit to how many serums you can add to your regimen, esthetician Enrique Ramirez, founder of Face to Face NYC, suggests stopping at three.
Can I use 3 serums?
The reason why people suggest a maximum of two or three serums comes down to layering and penetration. Heaps of brands, salons and experts recommend leaving time between applying your serums and moisturisers, and doing it in a specific order so as to allow all of the ingredients to actually sink into your epidermis.
How many serums is too many?
Limit to Two Serums Per Routine
We recommend you use no more than two serums per routine. Again, alternating skin care items is a strategy here. If you have many serums that you like, use one to two in your morning routine and two different serums in the evening.