How To Keep Hair Straight Overnight

How To Keep Hair Straight Overnight | Learn To Avoid Curling With the Help of Our Guide

Keeping your long straight hair just the way it is during the day is challenging enough, let alone keeping it so after waking up in the morning. Fortunately, there are many easy and effective ways how to keep hair straight overnight, and these are affordable, too, so your hair won’t curl from spending more money on expensive hair products.  

These methods apply to naturally straight hair and to straightened hair. You don’t want to spend between 15 and 60 minutes – the time depends on the type, length and thickness of your locks –straightening your hair in the morning, going to sleep with it at night, and then waking up with tangles, knots and curls the morning after.

General Tips: How To Keep Hair Straight Overnight

If you have wavy or curly hair, the best how to get straight hair without using relaxers and other chemicals is to use a high-quality hair straightener or a top-rated flat iron. Be careful about using a flat iron since its improper use can lead to burns on the scalp and damaged hair (e.g., singed hair).  

Know how to straighten your hair first

A few tips to keep in mind when straightening your hair with a flat iron.

  • Prepare your hair by using a shampoo and conditioner with smoothing properties. Your hair shouldn’t be dry and brittle since frazzled and frizzy hair won’t lie flat against each other. After applying the conditioner, use a paddle brush to comb it through your hair, rinse gently with cool water, and pat dry with a microfiber towel.
  • Use the rough drying technique in blow drying your hair. Shake the dryer back and forth over your head, and keep the nozzle facing downward. Dry your hair until it’s only 80% dry and let it air-dry, preferably.
  • Apply a thermal protectant to your hair while it’s still damp. The hair product will protect your strands from the heat, resist humidity, and reduce frizz; otherwise, your hair may be straight after subjecting it to the flat iron but it’s as frizzy as can be. Use argan oil if you have coarse or thick hair since it moisturizes the strands while also adding more shine.  
  • Use a boar bristle brush since it will make your hair smoother and sleeker after the blow drying process.  
  • Check that your hair is as dry as it can be before using the flat iron on it; wait for the thermal protectant to be absorbed by your hair.  
  • Check that the flat iron’s temperature is within the safe zone where your hair is concerned. The general guidelines are:
    • For fine or damaged hair – below 300°F
    • For normal hair – between 300°F and 380°F
    • For curly or coarse hair – between 350°F and 400°F
  • Create sections of your hair that can be ironed one at a time. Keep the hair sections pulled as taut as possible so these will need less pass-through with the flat iron – and the less pass-through, the less damage to your hair.  
  • Apply a finishing product to your hair, preferably one that will decrease frizz and increase shine.  

In all these steps in blow drying and straightening your hair, you should always keep in mind that heat protection is key to attaining straight hair and keeping it healthy. First, the heat protectant spray coats your hair strands with a protective barrier that prevents them from becoming overly dry after being subjected to the flat iron’s heat. 

With minimal thermal damage, your hair will not have flyaway strands and split ends so you can retain your straight hair.   

Second, the use of a flat iron with a tourmaline or ceramic plates also minimizes the risk of thermal damage to your hair. The plates deliver a more even heat distribution and seamlessly glides over your hair strands without catching. You can then straighten your hair with less snags (i.e., starts and stops for kinks and the like) and with less split ends, among other damage.  

Third, choose the low temperature setting for the blow dryer and flat iron, especially if you have thin or fine hair, which will also reduce thermal damage. Use the higher heat settings for coarse, curly, of thick hair.

Avoid overdoing your hair, too, especially when it’s subjected to heat. Give your hair a few days off every week from the flat iron, and keeping it straight overnight should do the trick. Stop fiddling, twirling, and playing with your hair because these can lessen the straightening effect, too.

Brush your hair before going to sleep

Among the best ways how to sleep with long hair and wake up with less tangles is to brush, brush and brush your hair. Again, be sure to use a boar bristle brush since it aids in distributing the natural oils to your hair, lessens the damage caused by friction on your hair, and feels removes dust and dirt from your hair. Plus, it feels more luxurious than the cheap nylon brushes.

If you must use a comb, such as when removing the tangles first, you should use a wide-toothed comb and use it only until the tangles are no more.  

Of course, you should only sleep when your hair is completely dry. Even slight dampness can cause frizz or waves overnight, especially if you don’t wrap your hair.  

Be careful not to overly brush your hair either. Just brush until your hair feels smooth and sleek.

Sleep with the right hairstyle

Braids and buns aren’t great overnight hairstyles because these can leave dents, waves and curls in your otherwise poker-straight hair.  These can then make your straightening efforts futile and add to the time spent on your morning beauty routine. 

Instead, we suggest sleeping with your hair wrapped in a silk scarf.  

Use dry shampoo

Dry shampoo is an excellent product for keeping oil from fine, straight and oil-prone hair. Instead of washing your hair every night, which can cause frizz over the long run, you can spritz dry shampoo on it. You will find that it’s a good way how to keep hair straight while also maintaining its volume. 

Spray the dry shampoo about six inches away from your head so that it doesn’t get into your roots yet. Then allow it to sit for one minute and then work it into your roots using your fingers.

Tip: Use one or two shakes of powdered dry shampoo, if you’re using it, and massage it into your scalp.

Try a hair oil

If you have dry hair or straightened black hair, you can apply two or three pumps of a lightweight hair oil, which will keep your hair nourished.

With regular and proper application, it can also fight frizz and keep your hair straight even on hot and humid days and nights.  

Better yet, you can apply hair products to keep hair straight without adding too many chemicals like relaxers. These products usually have straightening agents that also keep your hair shiny and prevents frizz.  

Apply protectants

Yet another way how to keep hair straight at night is to apply an overnight protecting serum on your brushed hair. Choose one that contains high levels of protein and low alcohol content; products with coconut oil or argan oil are also great choices.  

You may also use a volumizer since it can keep hair straight overnight. It’s most suitable for naturally fine and straight hair since it can add volume. Just use a dime-sized amount on damp hair and spread it through your strands with your fingers.  

While it may seem like an extra expense, applying both a straightening serum and a thermal protectant when using a flat iron is a must-do method in how to keep hair straight after straightening it. You should also use both products when curling and blow-drying your hair so as to protect it from damage and keep it healthy for a longer period. 

Many thermal protectants are also formulated to hold the hairstyle, whether it’s curly or straight. These can also infuse moisture and shine, as well as add vitamins and fatty acids, to your hair. These can be applied to wet or dry hair but always keep in mind that you should only straighten dry hair.

Apply the straightening serum, too, before going to sleep. It’s an alternative to the hair oil we previously mentioned.

Beware of the humidity

Every method how to keep hair straight after straightening will be in vain if and when your hair is exposed to humidity. Your poker-straight hair can become frizzy when exposed to high humidity, especially when it’s a hot day or night. 

A few tips to prevent frizz by controlling the humidity in your home and surroundings:

  • Sleep in a cool bedroom. Set your air-conditioner or thermostat to cool – or as cool as you can stand it – so that your hair doesn’t become frizzy in the morning. Leave your bedroom windows open during cool evenings, if necessary.  
  • Keep your sweating, especially in the head, to a minimum. The moisture from your scalp when it’s sweating can cause frizz, even curls in your straightened hair.  This is where the use of a silk scarf and/or satin bed sheets and pillowcases makes sense.
  • Use an umbrella to protect your hair from the rain. Even a slight drizzle can cause your straightened hair to become frizzier by the hour.  

  • Spray an anti-humidity hair product, if it’s necessary in very hot and humid places. Apply it after using a flat iron and whenever needed. 

Environmental humidity isn’t in your control but you can take the abovementioned measures to decrease its adverse effects on your naturally straight or straightened hair.

Sleep on silk pillowcases

While it’s a surprising method to keep hair straight, it actually works! Silk pillowcases are best for straight or straightened hair since these have numerous benefits including: 

  • It’s essentially a friction-free material so your hair smoothly glides over it instead of creating tangles, kinks and knots. In contrast, cotton pillowcases have a Velcro-like effect on delicate hair strands – the fibers catch on the strands and, thus, frizz, tangles and knots are created. With silk pillowcases, your straightened hair won’t catch on the fibers.
  • It aids in moisture retention without causing excess moisture to build up. This is important since sweat can cause frizz in straight hair overnight.  

Silk pillowcases can be more expensive than cotton pillowcases but think of them as an investment in keeping your long, straight hair as smooth and sleek as it can be.  

Wrap your hair

We saved the best way how to keep hair straight overnight after straightening for last! Pinning your hair in sections to your head limits its ability to move around and bounce up. Wrap your hair with a silk scarf or wrap after pinning it.

You can then wake up with straight hair, the same one you went to bed the night before.

Wrapping Tips: How To Keep Hair Straight While Sleeping

But pinning doesn’t initially seem like a good way how to keep hair straight when sleeping because you can’t control your movements by then. The trick here is that you shouldn’t apply too much pressure and use one too many bobby pins on your pinned hair. Otherwise, these can leave their marks, literally, on your straight hair.

The steps in pinning and wrapping your hair are relatively easy although you may have to practice a couple of times to perfect them.

You will also need a comb or hair pick, bobby pins, and a silk scarf or a satin head wrap, whichever you prefer.  

You should brush your hair and apply the hair protectant, hair serum and/or hair straightener on your strands first.  You must check that your hair is as dry as possible, too, before wrapping it.

  • Part your hair down the middle starting from the back to the front. Use either a hair pick or comb in making the center part. Tilt your head down and place it down the back of your head to create the center part.

The trick here is to make two sections with more or less equal amounts of hair in each section.

  • Using a natural boar bristle brush, brush your hair out but keep the center part. Brush your hair forward away from the center part and then brush it front towards the back on each side.

Tip: Tie a padded hairband around the side that’s not being brushed yet so that the hair strands don’t join the strands on the other side. Just tie it loosely so that it doesn’t leave a mark on your hair.  

  • Wrap each section of your hair around the back of your head. Start with the hair on your left side and wrap it about midway up in the back; think about it as a pigtail-like hairstyle.

Bring this section over the back of your head so that its ends rest on your head’s right side. Secure this section with a curved bobby pin; use more pins, if needed.

Do the same steps with the hair on your right side. Again, secure the ends with curved bobby pins.

Tip: Wrap each section as tightly as possible but not too tightly lest your hair becomes wavy at the points where these was wrapped.

Wrapping too tightly can get your hair strands warped.

Tip: Wrap each section twice around your head in case it’s long enough to do so.

Tip: Check that the curved bobby pins are placed as closed to your head as possible. This way, there will be little to no dents left on your hair in the morning.

When you’re satisfied that the hair sections are secure, you can then wrap a silk scarf or a head wrap around your head. You can either tie the silk scarf by tying a knot on top of your head or at the back of your head (i.e., nape). You may also use bobby pins to secure the silk scarf to your hair so that it won’t come off while you sleep.

Head wraps are also good alternatives to the silk scarf method. Be sure to choose the right size for your head and hair – too large and your hair will still move around; too small and your scalp may sweat from lack of circulation.  In either case, your hair will likely not be as straight in the morning as you want.

If you have short straight hair, you can still wrap your hair at night but with a few changes. Instead of wrapping your hair around your head, you can use a few bobby pins to keep its strands as close to your head as possible. Don’t use too many pins and don’t pin up the strands at the back of your head.

When you’re satisfied that your hair will be straight as a pin, you can wear a silk scarf. You should check that it’s as tightly placed on your head without cutting off circulation. Your hair shouldn’t move as much as it will without the scarf.  

In conclusion, these methods how to keep hair straight over night should be done on a consistent manner. Yes, these require time and effort but you will find that the results are well worth it, especially when you see that your straight hair doesn’t need extra attention the morning after. Your hair will be your crowning glory even when all you did was brush it well.