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Sevich 100g Hair Fibers Refill showing available color selection options.

Sevich 100g Hair Fibers Refill application demonstration on thinning hair.

Sevich 100g Hair Fibers Refill before and after results on thinning hair.

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Sevich 100g Hair Fibers Refill keratin fiber texture close-up view.

Sevich 100g Hair Fibers Refill shade guide with 10 available colors.

Sevich 100g Hair Fibers Refill step-by-step usage instructions.

Sevich 100g Hair Fibers Refill instant coverage for thinning or sparse areas.

Sevich 100g Hair Fibers Refill natural undetectable finish on hair.

Sevich 100g Hair Fibers Refill all available shades displayed together.

Sevich 100g Hair Fibers Refill lifestyle photo showing confident fuller hair.

Sevich 100g Hair Fibers Refill key benefits and features highlighted.

Sevich 100g Hair Fibers Refill

Instant Keratin Fiber Concealer

(71)

$23.32

A cosmetic keratin hair fiber refill that instantly conceals thinning areas — not a hair growth treatment.

Instant Coverage
10 Blendable Shades
Lightweight, No Clumping
Washes Out With Shampoo

Quantity:

In stock – Ready to Ship

Free shipping Free shipping On orders over $100
14-days returns Easy and hassle free
Secure payment 100% protected

100g Refill Size

Weeks of regular use

10 Shade Options

Blend for a custom match

12–24 month shelf life

Store away from heat & light

Washes Out With Shampoo

Rinses out completely on your normal wash day

Product Details

Sevich 100g Hair Fibers Refill is a cosmetic hair fiber concealer, not a hair growth or hair loss treatment — and it does exactly what it promises: in under a minute, it visually thickens thinning areas so your hair looks fuller right now. The natural keratin fibers cling to your existing strands using static electricity, blending in to cover sparse spots, visible parts, and exposed scalp.

This 100g size is a refill pack made to top up a compatible hair fiber applicator, and it comes in ten shades, so most people can find a close match to their natural color or blend two shades together for an even closer result. The fibers are lightweight and are designed not to clump or weigh hair down, which keeps the finish looking like real hair rather than a product sitting on top of it.

Because the fibers work by clinging to hair that is already there, they are most effective on thinning areas, part lines, and the crown, where there is still some hair for them to bond to — coverage on completely bald patches will be limited. Applied sparingly and blended well, the result is a natural-looking finish that lasts through a normal day.

It's important to be clear about what this product is: a temporary, cosmetic concealer that changes how thinning hair looks, not a treatment that grows new hair, stops shedding, or reverses hair loss. It washes out completely with regular shampoo, so there is no lasting change to the hair or scalp — just an easy way to feel more confident about your hair's appearance on any given day. Anyone dealing with ongoing hair loss should speak with a doctor or dermatologist about treatment options.

To use, apply the fibers to clean, completely dry hair, shaking them lightly over thinning areas and patting gently to blend. Finish with a light fiber-hold spray for extra staying power, and remove with your usual shampoo.

If you are also looking for scalp-focused options, take a look at our Hair Loss Products collection.

Why Choose This Refill

A Concealer, Not A Treatment. This product is a cosmetic hair fiber concealer. It does not grow hair, does not stop hair loss, and does not treat any scalp or hair condition — it visually camouflages thinning areas using fibers that cling to hair you already have.

Temporary By Design. Coverage washes out completely with regular shampoo, so there's no lasting change to the hair or scalp.

Best On Thinning Areas. Works best where some hair remains for the fibers to bond to; coverage on fully bald patches is limited.

Concealer Benefits

Instant Coverage. Visually thickens thinning areas in under a minute using natural keratin fibers.

Electrostatic Bond. Fibers cling to existing strands using static charge for an all-day hold.

10 Blendable Shades. Mix two tones for a closer match to your natural color.

Lightweight Formula. Designed not to clump or weigh hair down.

How To Use

Step 1. Pour fibers into a compatible hair fiber applicator.

Step 2. Start with clean, completely dry hair for best adhesion.

Step 3. Lightly shake fibers over thinning areas and pat gently to blend.

Step 4. Finish with a light fiber-hold spray, and remove with shampoo as usual.

Main Ingredients

Material. Natural keratin hair fibers.

Color Options. 10 blendable shades.

Specefications

Product form: Powder
Suitable for hair type: All hair types
Target gender: Unisex

Shelf Life & Storage

Shelf Life. Best used within 12–24 months of purchase.

Storage. Store in a cool, dry place away from moisture and humidity; seal tightly after each use to prevent clumping.

Safety Instructions

Patch Test. Patch test if sensitive to fragrances or preservatives.

Application. For external use only; keep away from eyes.

Usage Tip. Apply sparingly in one spot — less is more for a natural, undetectable look.

Caution & Disclaimer

Caution. For external use only. Keep out of reach of children and pets. Avoid contact with eyes, broken skin, and sensitive areas.

Disclaimer. Our products are not intended to diagnose, treat, cure, or prevent any disease. Always consult with a healthcare professional before use, especially if pregnant, nursing, or under medical care. Individual results may vary.

Licensing & Trademarks. All brand names, logos, product pictures, and trademarks are the property of their respective owners and are used strictly for identification purposes.

Shipping & Return

We process and ship all orders within 1–2 business days.

Most customers receive their orders within 4–7 business days, depending on location and carrier performance.

Once your order ships, you'll receive a tracking number via email or SMS to follow your delivery in real time.

Delivery times may vary slightly during peak seasons or weather conditions, but we always aim to get your order to you as quickly as possible.

We accept returns and exchanges within 14 days of delivery.

FAQs

Q: How do I use the Sevich 100g Hair Fibers Refill?
A: Pour the fibers into your compatible hair-fiber applicator, then apply to clean, completely dry hair. Lightly shake or spray fibers over thinning areas, pat to set, and finish with a light fiber-hold spray if desired.

Q: Which shade should I choose, and can I mix colors?
A: Match the shade to your root color for the most natural result. If you’re between tones, start slightly darker or mix two shades—apply the darker first, then layer the lighter to soften and blend.

Q: How long do the fibers last and are they water- or sweat-resistant?
A: Fibers adhere via electrostatic charge for all-day wear under normal conditions. They resist light sweat and humidity, but should be avoided in heavy rain, swimming, or intense workouts unless secured with a finishing spray. Remove with shampoo.

Q: Will this work on very thin or fully bald areas?
A: Fibers need some hair to cling to. They work best on thinning spots with visible strands and along parts or hairlines when applied sparingly and blended. Coverage is limited on completely bald patches.

Q: What’s in the formula and is it suitable for daily use?
A: The fibers are made from natural keratin protein with supporting ingredients (ammonium chloride, silica, DMDM hydantoin as preservative, and light fragrance). They’re lightweight, non-greasy, and suitable for daily use as directed. Patch test if you’re sensitive to fragrances or preservatives.

Sevich 100g Hair Fibers Refill

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