poocatgrrl
Well-known member
Someone please respond--I have tried to ask other places, but no response.
I have a bottle of the Obagi professional Vit-C serum.
1. How long before it "goes bad"? It takes so little each time I use it that I'm thinking it will be about a year before I finish the bottle.
2. Can I use it with other serums/treatment creams? Like if I use a Vit-A product, can I use this too?
TIA!
I have a bottle of the Obagi professional Vit-C serum.
1. How long before it "goes bad"? It takes so little each time I use it that I'm thinking it will be about a year before I finish the bottle.
2. Can I use it with other serums/treatment creams? Like if I use a Vit-A product, can I use this too?
TIA!