Etched horizontal lines across the forehead and skin that has thinned there are treated with smooth threads, the fine unbarbed kind, laid in a mesh under the skin to thicken it as they dissolve and collagen forms around them. One maker's page names the forehead with the under-eye area and under the chin among the uses of smooth threads; no US clearance names it and no series measures it, and we say so plainly. Placed by our doctor under local anaesthetic in about 30 minutes at PDO Threads Clinic, 8 Exhibition Road, with the plan in writing at a free consultation.
What it does on the forehead
The skin thickens and the etched lines soften over the months as collagen forms around the threads. Lines that show only when the brow moves are a muscle question, which our doctor can treat with injectable treatments. A dropped brow is a lift question, for which barbed threads are placed at the brow, and the doctor says which at the free consultation. The result fades over about a year as the threads dissolve.
The procedure and after
Local anaesthetic, the smooth threads placed through a fine needle in a mesh across the forehead, in about 30 minutes. Swelling and tenderness for a week, bruising in some, which can track down to the eyes in our experience; sleep on your back with the head raised for about a week, no massage or facials for two weeks. The how it works page sets out each step.
Who it suits
Adults with etched forehead lines and skin with some spring. The usual exclusions apply: pregnancy and breastfeeding, an active infection, a bleeding disorder or blood thinners that cannot be paused, an autoimmune disease without the doctor's advice first, keloid scarring. The brow page covers the brow lift, and the full guide the rest.
Not sure you are suitable? Ask the clinician, it is free
Book a free consultation
Call PDO Threads Clinic on 0207 043 8107 or use the form below. The doctor looks at your forehead at rest and moving, counts the threads, and gives you the plan in writing.

