Mono threads
Smooth, single-strand threads that tighten and rejuvenate skin without creating a lift. Best for fine lines on the forehead and under-eyes, mild neck laxity, and areas where collagen stimulation is the primary goal.
Types of PDO Threads
By Alladerm Medical Spa · Published · Updated
PDO threads aren't one-size-fits-all. Here's how mono, cog, and screw threads differ — and which areas each is best suited for.
Understanding PDO Thread Types
PDO (Polydioxanone) threads are medical-grade, dissolvable threads originally developed for use in surgery and now used in non-surgical facelifts. Inserted under the skin, they lift, smooth, and stimulate a natural collagen-building healing response as the body gradually absorbs them.
PDO threads fully dissolve within about 4–6 months, but the collagen benefits continue to build long after — with many patients seeing results for 12–18 months. The thread type chosen determines what kind of correction is possible.
Benefits
Cog threads
Barbed threads with tiny hooks that anchor to tissue and physically reposition it for a stronger lifting effect. Best for jawline definition, cheek lifting, and heavier skin folds.
Screw (tornado) threads
Coiled threads that add volume and lift to sunken or deflated areas. Best for nasolabial folds, cheeks, temples, and deeper wrinkles where both volume and tightening are needed.
What to Expect
Who Is a Good Candidate?
- Forehead & brows
- Cheeks
- Jawline
- Neck
- Nasolabial folds
- Marionette lines
Types of PDO Threads FAQs
Do PDO threads really lift the face?
Yes — cog and screw threads offer a genuine lifting effect by physically anchoring and repositioning sagging skin. Mono threads tighten without repositioning, which is still effective for fine lines and overall firmness.
Are PDO threads better than fillers?
They address different concerns. Fillers add volume to sunken areas; threads tighten and lift loose skin. Many patients benefit most from a combination of both — the right approach depends on your anatomy and goals.
How long do results last?
Roughly 12–18 months on average, depending on skin type, lifestyle, and the thread type used. Collagen production continues even after the threads dissolve, extending results beyond the absorption window.
Are PDO threads safe?
Yes — PDO has a long safety record in surgical settings and is fully biodegradable. When placed by an experienced provider, the risk of complications is low.