Why face serum is used?

More Questions

• Why use face serum?
• How many times to apply serum on face?
• Should i wash my face after using sheet mask?
• How to use niacinamide serum for beginners?
• What are the difficulties historians face in using manuscripts?
• Why serum is used?
• Why hair serum is used?
• When should i use vitamin c serum?
• Should i use moisturizer after serum?
• What is the use of charcoal face mask?