The revolutionary Cap+ Volumizing Keratin Brush works with these easy-to-use, pre-filled cartridges to deliver natural-looking keratin fiber application in seconds. Each cartridge contains .7g/.25oz. of keratin fibers.

A choice of 11 keratin cartridge color replacements ensures you use the perfect match for natural blending with your existing hair.


The Cap+ Keratin Fiber Replacement Cartridges work with the Cap+ Volumizing Keratin Brush to instantly conceal areas of thinning. You can easily brush in the just the amount of coverage that you need, focusing on sparser areas that are expertly concealed. Fibers are easily washed off with shampoo. For additional adhesion of the miniature keratin fiber particles, you may wish to use our Fiber Holding Spray

For very fine or short hair, you may also wish to purchase the Soft Brush head.

For an easy look of fuller hair in seconds, follow these steps:

  • For first-time use, remove cartridge seal, and align and insert cartridge into top of brush.
  • Holding brush handle face up, move power switch to the first left position to open brush dispenser doors.
  • Begin to brush hair, and push switch to the second position to dispense fiber. Release switch to stop. When satisfied with coverage, power off brush to close dispenser doors.

Usage Tips

  • Always apply to dry, clean hair. Applying to dry hair will ensure fibers can cling to hair. Will not work on wet hair.
  • Store cartridges in a cool, dry place, away from humidity.

Choose from 11 Keratin cartridge color replacements for the perfect match: Black, Dark Brown, Brown, Light Brown, Auburn, Dark Blonde, Medium Blonde, Ashe Blonde, Dark Grey, Grey, Light Grey

To assure continuous, uninterrupted use:

  • Periodically when using, clean accumulated fibers from the release doors by spraying with compressed air (typically used for computer equipment).
  • Store away from humidity to avoid clumping of keratin fibers. Retain the desiccant packet that came with your kit to help keep dry.

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