Bosley Hair Thickening Fibres – Black
Thickening Fibres are a safe and effective way to eliminate the appearance of baldness and thinning hair. Perfect for both men and women experiencing hair loss, as well as recent hair transplant patients.
These fibres are made from Keratin, a fibrous structural protein that is a key component of hair and nails. The fibers are charged with static electricity, allowing them to intertwine and bond naturally with your existing hair.
- Creates instant thicker, fuller-looking hair
- Electrostatically attaches to existing hair follicles
- Covers up fine and thinning areas of hair
- Perfect for temporary cover-up after hair transplant procedures
- Enhances the density of existing hair
- Easy to apply and remove
| Available Colors | Usage |
|---|---|
| Black | For those seeking a natural, sleek look |
| Dark Brown | For a more natural, warm tone |
| Medium Brown | For balanced, everyday wear |
| Light Brown | For lighter, sun-kissed appearance |
FAQ
How long do the thickening fibres last?
The fibres typically last up to 24 hours after application, depending on hair washing and environmental exposure.
Can I use these fibres after a hair transplant?
Yes, these fibres are specifically designed to be used as a temporary cover-up after hair transplant procedures.
Are the fibres safe for daily use?
Yes, the fibres are made from natural Keratin and are safe for daily use on existing hair. They do not damage hair follicles or cause irritation.

Lucas Dickens –
I used these black thickening fibres after my hair transplant and they gave me instant fullness. The fibers stuck well and looked natural. I removed them after 24 hours and my hair felt normal. Great for covering thin spots.
Rebecca Hudson –
The application was simple and the black color matched my natural hair well. It helped cover thinning areas on the sides and top. I didn’t notice any irritation or damage to my hair.
Neil Wilkins –
Perfect for a quick fix before an event. The static bond made them stay in place without falling off. I used them twice in a week and they worked well without any residue.
Nicholas Hardacre –
They worked as expected but the fibers were a bit hard to remove after a long day. I think they might be better suited for short-term use or when hair is dry.
Stewart Anderson –
I’ve used this product for several months now and it’s become a go-to for covering thinning areas. The black color blends seamlessly with my hair and gives a fuller look without looking fake.