
1. Build your base
Shake the Keratherapy can well. On dry, styled hair, spray a light, even layer from 3–6 inches (8–15 cm) away. Let it dry for 2–3 minutes.
Build fuller-looking hair in three steps. Start with a light layer of Keratherapy Fiber Hair Thickener for broader coverage, add Toppik Hair Building Fibers to targeted areas, then finish with Toppik FiberHold Spray.
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Keratherapy’s tinted thickener gives broader coverage wherever the scalp shows through. Toppik’s loose fibers add fullness at the part, crown or hairline, and the FiberHold finishing mist helps keep them in place.
Both coverage products are temporary and wash out with shampoo. Choose the Toppik and Keratherapy colours separately to suit your roots.
Keratherapy Fiber Hair Thickener Spray (4 oz)
Complete Ingredient List: Hydrofluorocarbon 152A, Butane, Alcohol Denat, Iron Oxide Red CI 77491, Iron Oxide Yellow CI 77492, Titanium Dioxide CI 77891, VP/VA Copolymer, Aluminum Starch Octenylsuccinate, Propylene Glycol, Hydrolyzed Keratin, Kerabond, Silica, Fragrance, Amyl Cinnamal, Benzyl Salicylate, Alpha-Isomethyl Ionone.
Free From: Sulfates, Parabens, and Sodium Chloride.
Toppik Hair Building Fibers (12 g)
Main Ingredients: Keratin, Ammonium Chloride, Silica, DMDM Hydantoin.
May Contain: Yellow 6 (CI 15985), Yellow 5 (CI 19140), Red 22 (CI 45380), Red 33 (CI 17200), Blue 1 (CI 42090), Green 5 (CI 61570), Green 3 (CI 42053), Green 6 (CI 61565), Orange 4 (CI 15510).
Toppik FiberHold Spray (4 oz)
Alcohol Denat, Water, Octalacrylamide/Acrylates/Butylaminoethyl, Methacrylate Copolymer, PEG-12 Dimethicone, Keratin, Hydrolyzed Keratin, Helianthus Annuus (Sunflower) Seed Extract, Cucumis Sativus (Cucumber) Fruit Extract, Camellia Sinensis (Green Tea) Leaf Extract, Vaccinium Macrocarpon (Cranberry) Fruit Extract, Triethyl Citrate, Aminomethyl Propanol, Parfum, Phenoxyethanol.

Shake the Keratherapy can well. On dry, styled hair, spray a light, even layer from 3–6 inches (8–15 cm) away. Let it dry for 2–3 minutes.

Shake a small amount of Toppik onto areas that need more coverage and pat gently to settle the fibers. Build in light layers as needed.

Hold the FiberHold Spray 4–8 inches (10–20 cm) away and finish with short, light sprays.
Keratherapy Fiber Hair Thickener lasts until your next shampoo. As a temporary, wash-out product, the keratin-infused fibers cling to existing hair strands and wash out with shampoo.
It is not possible to give a precise amount of Keratherapy Fiber Hair Thickener to use per application, as the correct quantity is highly individual. It depends entirely on the size of the area you need to cover and the level of density you want to achieve.
The most important rule is to start with a small amount and build up in light layers. Using too much at once will make the results look unnatural and can cause the product to clump.
Yes, a little transfer is possible. Keratherapy Fiber Hair Thickener can transfer to clothing, pillows, and other surfaces, especially if not applied correctly or set with hairspray. The fibers are designed to cling to hair, but friction from contact can cause them to rub off.
However, there are ways to minimize or prevent this transfer.
To prevent transfer:
Finish with hairspray. Applying a light mist of hairspray after the fibers are in place is highly recommended. This locks the fibers to the hair and significantly reduces the chance of them rubbing off on fabrics.
Let the product dry completely. After spraying the fibers, allow them to set and dry for 2–3 minutes before touching your hair or getting dressed.
Avoid touching the treated area. Once applied, try not to touch your hair in the areas where the fibers have been sprayed. Rubbing or scratching your head can dislodge the fibers.
Wash before bed. For the most security, it is best to wash your hair before going to bed to completely remove the product. This also helps maintain scalp health and avoids potential buildup.
Toppik Hair Building Fibers are made of Keratin protein - the same thing that makes up human hair. The Keratin protein comes from a natural wool source, which is the closest match to human hair.
It is recommended that Toppik Hair Building Fibers be applied after the use of any styling tools such as hairdryers, flat irons or curling irons. Styling products (other than hairspray) should be applied to the hair prior to applying Toppik Hair Building Fibers. Applying gels, mousses, pastes, serums, and the like after applying Fibers may cause shifting the Fibers and could expose the areas that were meant to be covered. Let styling products dry before applying Fibers.
Yes, you can mix different shades of Hair Building Fibers. In fact, it is often encouraged to mix different shades in order to find the closest match to your own color, especially when working with blonde or gray hair. The product can either be mixed directly in the hair (use the lighter color first, and then layer the darker color over it).