How do face serums differ from moisturizers?
How should I apply a face serum?
When should I use a face serum?
Do I still need a moisturizer if I use a face serum?
Can I use multiple serums at once?
How long does it take to see results from a face serum?
Are face serums suitable for all skin types?
Can face serums cause breakouts?
How much serum should I use?