Why: Spot Treat, Address Concerns like Aging, Dullness, Dryness, Acne, and more
How:Apply every night before sleeping and after moisturizing to diminish aging signs and sun damage.
At night, put serum all over face. Massage into skin until absorbed.
How Much To Use:
If you use too much: Using too much of any product leaves active ingredients sitting on your skin. Some, such as exfoliating serum, can lead to stinging or peeling.
If you use too little: "If you use too little serum, you will not get the maximal effect," Barba says.