Science Writer · Editorial staff
Fitzgerald Hanlon
Tracks new techniques and devices in lip filler and separates genuine advances from marketing.
3 stories by Fitzgerald Hanlon
Explainer5 min · Fitzgerald Hanlon
G Prime, Explained: The One Number That Decides How Your Lip Filler Behaves
Injectors talk about soft gels and structured gels, but the difference comes down to measurable rheology. Here is what G prime actually means, why it matters more in lips than almost anywhere else on the face, and how to use it when comparing products.
August 7, 2026
Cost & Longevity5 min · Fitzgerald Hanlon
How long lip filler lasts and maintaining results
Months, not years, and what affects the timeline.
January 1, 2026
Cost & Longevity7 min · Fitzgerald Hanlon
How much does lip filler cost?
What a syringe really runs, why prices vary so much, and what a half-syringe gets you.
November 5, 2025