BosleyMD BOSVolumize Hair Thickening Fibers — Medium Brown 0.42 oz | Keratin Microfibers, Wind & Sweat Resistant

BOSVolumize Hair Thickening Fibers are keratin microfibers that cling to existing hair to instantly create the appearance of thicker, fuller coverage for thinning areas and bald spots.

If you want fast, non-invasive improvement in hair density without sprays or salon visits, BosleyMD BOSVolumize uses negatively charged keratin fibers to attach to your natural strands and visually fill low-density zones. The lightweight, blendable fibers are formulated to mimic human hair texture and color, so they integrate with your natural look while resisting wind and sweat for day-long wear. This product is vegan and free from sulfates, parabens and phthalates, developed by BosleyMD — a brand with decades of expertise in hair restoration.

How do these fibers bond to my hair?

BOSVolumize fibers rely on static attraction: the fibers are negatively charged and your natural hair carries a slight positive charge, so the fibers cling to existing strands and form a quick visual thickening effect. Application is simple and non-chemical — no dyes or adhesives are required.

• Keratin-based microfibers engineered to match hair texture.
• Negative charge creates static-cling to hair shafts.
• No permanent alteration—rinses out with shampoo.
• Works on both men’s and women’s thinning patterns.

Will the fibers stay put during daily activities?

BOSVolumize is formulated to resist light wind and perspiration, helping the added density remain intact through normal daily movement. For very active conditions or heavy rain, consider a light hairspray to seal the fibers for extra staying power.

• Wind- and sweat-resistant finish for everyday wear.
• Lightweight fibers that don’t weigh hair down.
• Compatible with styling products; avoid heavy oils directly before application.
• Easily removed with regular shampoo at the end of the day.

How do I choose the right shade and apply it naturally?

Pick a shade that closely matches your natural roots or base color — medium brown in this size blends well with many brown tones. Apply sparingly, building coverage gradually to avoid over-application and achieve a natural finish.

• Start with a small amount and target thinning patches or part lines.
• Use short bursts for even distribution; blend gently with fingertips or a brush.
• Layer for denser coverage, then set with light hold spray if desired.
• Removal is simple: shampoo normally to rinse fibers away.

Is this product safe for post-procedure or sensitive scalps?

BOSVolumize is made without sulfates, parabens, phthalates and is cruelty-free, formulated to be gentle while providing cosmetic coverage. It’s widely used as a temporary cover-up after procedures, but consult your clinician if you have specific post-operative instructions or scalp sensitivity.

• Vegan formula with no animal testing.
• Doctor-recommended within Bosley Pro product lines.
• Non-chemical adhesion — no dyes or glues.
• Appropriate for enhancing density after approved procedures per clinician guidance.

Who this is for: BOSVolumize Hair Thickening Fibers are ideal for anyone seeking immediate, non-surgical improvement in the look of hair thickness — whether covering diffuse thinning, visible scalp through the part, or small bald spots. It suits both men and women who want a natural-looking boost between treatments, an easy styling aid for special occasions, or a practical daily solution that washes out when you choose. The 0.42 oz medium brown size is a travel-friendly option for regular touch-ups and on-the-go confidence.

Ingredients

Keratin, Cetrimonium Chloride, Silica, DMDM Hydantoin, Iron Oxides (FD C Yellow No. 6, FD & C Yellow No. 5, DC Red No. 33, FD C Blue No. 1, FD & C Green No. 3, DC Green No. 5, DC Green No. 6)