What are hair fibers?
Hair building fibers (also called hair fibers, hair thickening fibers or hair loss concealer) are microscopic, colored fibers that you shake or spray onto thinning hair. They cling to your existing strands, make each one look thicker and fill in the gaps where scalp shows through.
The three main types
| Type | Made from | Examples | Strength |
|---|---|---|---|
| Keratin | Keratin protein, the same protein family as human hair | Toppik, Toppik PRO, Nanogen | Best hold, most natural texture |
| Plant / cotton | Levant cotton (Gossypium herbaceum) with mineral pigments | Caboki, Boldify | No animal ingredients, wide color range |
| Synthetic | Rayon, nylon or other microfibers | Febron | Low cost, large sizes |
Who hair fibers work for
- Thinning crown or vertex
- Widening part (very common in women)
- Diffuse thinning on top
- Hair transplant patients waiting on growth (with surgeon clearance)
- Anyone wanting extra density for photos or events
Who they don't work for
Fibers need hair to cling to. On a fully bald scalp they just sit on skin. For bare areas, look at scalp concealers, hairline powders, scalp micropigmentation or a hair restoration consult.
Cosmetic, not treatment
Fibers change how hair looks, not how it grows. That's why we recommend pairing them with a treatment routine, starting with the shampoo you use to wash them out each night.