Layering

[oilyskinboy]

I’m using the inkey list 20% niacinamide serum and i just purchased the inkey list polyglutamic acid serum. i wanted to know which one should i use first. Should i do the 20% niacinamide serum then polyglutamic acid serum or should i do the polyglutamic acid serum then the 20% niacinamide serum??? 

[WinglessOne]

@oilyskinboy  You can apply either one first; it's up to you. I haven't tried the new 20% niacinamide serum but I assume it has a lotion texture since it comes in a tube. The PGA serum is more liquidy. You might find you prefer to apply these 2 serums in order of thinner to thicker texture—so, PGA serum first and niacinamide serum next. But that order's not mandatory.