EASY TO USE AT HOME: The razor comb can shorten the design, can safely shape and thin thick hair; can be used to trim hair of people and pets; you can DIY your favorite hair style. If you have thin hair, use the fine teeth side. If you have thick hair, use the wide teeth side DOUBLE-SIDED HAIR TRIMMER COMB: Dual functional hair comb on one end and double sided razor comb for thinning and trimming on the other; For use on all hair including facial hair UNWANTED FACIAL HAIR: The razor comb is ideal for use on both thick and thin hair; for cutting, styling and thinning. Ideal for quickly removing unwanted hair without the hassles of shaving; Can be used for men and women, beards, mustaches, and all facial hair SAFELY CUTS HAIR: Hair cutter razor combs are used to shorten, shape, and thin hair; The safety shielded razor protects from cutting or scratching your skin; (4) Cutting Lengths: Extra Short Hair, Short Hair, Medium Hair, Light Hair REUSABLE WITH INCLUDED BONUS BLADES: Extra sharp blades with (5) bonus razor blades included; Uses standard double sided replacement razor blades; For best results always use fresh new blades; Blades will last depending on thickness of hair, enough for you to use for a long time