Peter Thomas Roth’s Instant FIRMx Glow-Filter Priming Serum is the primer that gives skin a lit-from-within glow before makeup even goes on. This is the full 1 fl oz tube.
Why We Like It: It’s an illuminating priming serum with a soft glow finish that blends seamlessly onto all skin tones, and its 5% Actigym™ helps sculpt the look of skin over time. Wear it under makeup for a filtered finish, or on its own for a fresh, radiant no-makeup day.
Best For: Anyone who wants an instant glow-filter finish — dull-skin days, makeup that needs a radiant base, or a lit-from-within look without foundation.

