How to Grow Out an Undercut

Ready to move on from your undercut and try out a new style? This article will walk you through how to grow out an undercut with as few awkward in-between stages as possible. We’ve also included some tips to help you style your hair in the meantime.

Method 1
Method 1 of 3:

Growing Out the Back and Sides

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    As stated, this will take a while. Be patient, and just let the hair on your back and sides grow until it matches up with the hair on the top of your head. [1]
    • The goal here is to get all of your hair the same length. This means letting the short hair grow out.
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    If you let all of your hair grow without cutting it, you'll just end up with a longer undercut. To prevent this from happening, you need to trim the hair on top of your head to maintain its length while the hair on your back and sides catches up. [2]
    • Regular trimming will also eliminate damage and split ends, which will keep your hair healthy and allow it to grow out more quickly. [3]
    • Plan on trimming the hair 1 ⁄ 2 to 3 ⁄ 4 inch (1.3 to 1.9 cm) every month or so.
    • If you are on a tight budget, trim it about 1 inch (2.5 cm) every 2 months instead.
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    At this point, you have a fresh start. You can cut your hair into a new style, or you can let it keep growing. Regardless, it would still be a good idea to visit a hairdresser for a trim. [4]
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Method 2
Method 2 of 3:

Styling Your Growing Hair

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    Wash your hair first, then pat it dry with a towel. Hold the hair dryer above your head, and aim the nozzle down at your sides as you blow dry your hair. [6]
    • Set the style afterwards with some hair wax.
    • Add a flat, wide directional nozzle to your hairdryer to make the process more effective and give you more control over the direction of the air flow.
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    There is no need to wash it more often than that. Not only can over-washing affect the texture of your hair, but it will also remove any styling products that you applied to the sides. [7]
    • If you remove these styling products, the sides will poof out.
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    Not only can they look stylish and keep you warm during the colder months, they will also help keep down the sides and prevent them from poofing out. [8]
    • Make your hair look longer by parting it down the middle before you put the hat on.
    • If you don't like wearing hats that much, try leaving it on for about 2 hours; after you take it off, your hair should be flatter along the sides and not so poofy.
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    Rather than combing your hair back, try a middle or side part instead. This works best when the sides are still short, but you can use this technique after you've flattened the sides with a hairdryer. [9]
    • If the sides of your hair are starting to get long, you can keep them flat by applying some hair gel and using the palm of your hand to smooth the gel downwards into your hair.
    • Use the handle of a rat-tail comb to make the parts nice and neat.
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Method 3
Method 3 of 3:

Growing an Undercut into a Different Cut

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    You will still be growing out your back and sides, but since the hair on the top of your head is shorter, the overall process won't take as long. How short you cut the hair on the top of your head depends on the style you're going for.
    • For example, if you want to go for a quiff , trim your hair to about 2 to 2 1 ⁄ 2 inches (5.1 to 6.4 cm). [10]
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    Since you are starting with a shorter goal, this should only take about 3 to 4 months. You can stop when the sides are about 1 to 1 1 ⁄ 2 inches (2.5 to 3.8 cm) long. This will give you enough hair to work with for the final blend. [11]
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    Once the sides and back are almost the same length as the top, it's time to blend them. Run a pair of trimmers along the area where the sides and back curve into the top of your hair. [12]
    • If you aren't sure how to do this, go to a hairdresser. Ask for a medium taper or a clean-cut taper. [13]
    • If you still want to keep your back and sides short, try a quiff or pixie . Both are similar, except that the pixie has more feathering.
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    Again, how short you go depends on what your goal style is. For example, a quiff or taper may have trimmed edges along the bottom, but a pixie may have slightly longer hair.
    • If you went to a hairdresser for the blending, then they will already have done this for you, based on your desired style.
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    Depending on what style you chose, there are lots of ways that you can go about with this. In most cases, you will need to blow dry your hair by brushing it back and upwards.
    • If you got a quiff, apply a volumizing mousse to your damp hair, then blow dry it upwards and back with a round brush.
    • If you got a pixie, you can go as wild as you like. Blow dry shorter pixies like quiffs; blow dry longer pixies short.
    • Use a little bit of styling wax or pomade to set your style.
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Expert Q&A

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      Tips

      • Hair typically grows 1 ⁄ 2 inch (1.3 cm) per month, but it could grow longer or faster depending on your genetics, lifestyle, and health. Hair health supplements like biotin can also help your hair grow out a little faster.
        Thanks
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      • There will be good hair days and bad hair days. There is little that you can do besides styling.
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        Helpful 3 Not Helpful 1
      • Consider growing your hair out into a quiff first, then either cutting it shorter or growing it longer from there.
        Thanks
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      Things You'll Need

      Growing Out the Back and Sides

      • Trimmers

      Styling Your Growing Hair

      • Hair dryer with nozzle attachment
      • Hair wax
      • Cap or beanie

      Growing an Undercut into a Quiff

      • Trimmers
      • Hair wax or pomade
      • Round brush
      • Hair dryer

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      References

      1. ↑ https://www.youtube.com/watch?v=1EDW9a1nWNo&feature=youtu.be&t=55s
      2. ↑ https://www.youtube.com/watch?v=1EDW9a1nWNo&feature=youtu.be&t=1m5s
      3. ↑ Arthur Sebastian. Professional Hair Stylist. Expert Interview. 29 April 2019.
      4. ↑ Arthur Sebastian. Professional Hair Stylist. Expert Interview. 29 April 2019.
      5. ↑ Arthur Sebastian. Professional Hair Stylist. Expert Interview. 29 April 2019.
      6. ↑ https://www.youtube.com/watch?v=9i3gQ_oLKxs&feature=youtu.be&t=1m39s
      7. ↑ https://www.youtube.com/watch?v=9i3gQ_oLKxs&feature=youtu.be&t=2m7s
      8. ↑ https://www.youtube.com/watch?v=9i3gQ_oLKxs&feature=youtu.be&t=2m45s
      9. ↑ https://www.youtube.com/watch?v=9i3gQ_oLKxs&feature=youtu.be&t=3m45s
      1. ↑ https://www.youtube.com/watch?v=BIpaInsSevc&feature=youtu.be&t=3m55s
      2. ↑ https://www.youtube.com/watch?v=BIpaInsSevc&feature=youtu.be&t=4m5s
      3. ↑ https://www.youtube.com/watch?v=BIpaInsSevc&feature=youtu.be&t=4m15s
      4. ↑ https://www.allthingshair.com/en-us/mens-hairstyles/undercut/growing-undercut-hacks/

      About This Article

      Article Summary X

      To grow out an undercut, let the back and sides of your hair grow uncut, and trim the hair on top of your head every 1-2 months to maintain the length. Keep in mind that it will take about 6-7 months for the hair on the back and sides of your head to be the same length as the top of your hair. In the meantime, try a middle or side part to cover up the sides so they don't look as short. For more tips from our Cosmetology co-author, like how to grow an undercut into a new haircut, scroll down!

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      • Jason

        Dec 1, 2021

        "Very helpful hints in styling."
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