SURETHIK Hair Fibers 30g Dark Brown — Keratin Microfibers for Thicker Natural-Looking Coverage, Water-Resistant

SURETHIK Hair Fibers (30g, Dark Brown) are keratin-based microfibers that instantly fill thinning areas and create the look of thicker, natural hair for men and women.

Whether you want to hide a widening part, reduce the appearance of a receding hairline, or camouflage small bald patches, SURETHIK's dark brown 30g refill delivers concentrated coverage in a discreet, easy-to-apply format. The product's keratin composition is designed to bond with existing hair strands for a blended result, and the formula is created to resist wind, sweat, and light moisture so touch-ups last through a busy day.

How quickly will I see results after applying SURETHIK fibers?

Results are immediate — most users notice visibly fuller hair as soon as fibers adhere to the hair. Application takes under a minute for small areas and a few minutes for broader coverage, so it's practical for daily use or last-minute touch-ups.

• Instant adhesion to existing hair strands for immediate volume
• Shaker or applicator options for targeted placement
• 30g size offers multiple applications depending on coverage area

Will SURETHIK fibers look natural under different lighting and from close view?

The keratin fibers are designed to mimic the texture and sheen of real hair, blending discreetly with your natural color and catching light in a similar way. Choosing the right shade — this product is Dark Brown — ensures the most seamless match, while the fine fiber size reduces clumping and visible residue.

• Keratin-based fibers match natural hair texture and light reflection
• Fine filament size minimizes detectable clumping
• Available in a palette of eight colors to better match natural tones

How well do the fibers stay put during daily activities?

SURETHIK fibers are formulated to be water-resistant and to resist displacement from wind and light perspiration, delivering reliable coverage for everyday situations. For best performance during heavy rain or vigorous exercise, pair the fibers with a compatible hold spray to extend longevity.

• Water-resistant formula reduces running or smearing in light moisture
• Holds against wind and normal sweat when applied correctly
• Works with styling sprays for enhanced durability in active conditions

How should I choose and maintain my SURETHIK fibers?

Select the shade closest to your natural hair color—this listing is for Dark Brown—and decide between the two available fiber sizes depending on your hair density and coverage needs. Store the 30g container in a cool, dry place and reapply as part of your daily routine; fibers can be removed with shampoo when you wash your hair.

• Choose color from eight natural options for best match
• Two fiber sizes accommodate thin to thicker hair textures
• Shampoo removes fibers at the end of the day for easy maintenance

Who this product is for: SURETHIK Hair Fibers 30g (Dark Brown) suits men and women seeking a fast, non-invasive way to improve the appearance of thinning hair or small bald spots without altering daily styling. It’s ideal for people who want immediate coverage, prefer a keratin-based fiber for a realistic finish, and value a water-resistant formula made to North American quality standards. If you need long-lasting hold during high-activity days, consider using a complementary hold spray; if you want sample shades, explore the SURETHIK color range to find your best match.

Ingredients

100% Organic Keratin