Yes, you can change your hair texture, but the result depends on the method and how long you want it to last

Hair texture can be altered temporarily with heat tools and products, semi-permanently with chemical treatments, or permanently with certain procedures. The change you can achieve ranges from subtle smoothing to dramatic straightening or curling, depending on your starting texture and which method you choose. Most temporary changes wash out or fade within days or weeks. Chemical treatments last weeks to months. Permanent texture changes are rare and usually involve significant damage or surgical intervention.

Your natural hair texture is determined by the shape of your hair follicles and the protein structure inside each strand. You cannot change the follicle itself without medical procedures, but you can alter how the proteins are arranged, which changes how the hair looks and feels. Understanding what is temporary, what is semi-permanent, and what causes lasting damage helps you make a choice that matches what you actually want.

Key Takeaways

  • Heat styling with a flat iron, curling iron, or blow dryer can change texture for a few days, but the change reverses when you wash your hair.
  • Chemical relaxers and keratin treatments can straighten curly or coily hair for weeks to months, but they weaken the hair and require maintenance.
  • Permanent wave (perm) treatments can add curl or wave to straight hair and last several months, though they also damage the hair structure.
  • Heat damage and repeated chemical treatments can permanently degrade your hair, making it brittle and prone to breakage, even if the texture change itself fades.
  • Protective styling, deep conditioning, and low-heat methods let you experiment with texture changes while keeping your hair healthier.

Temporary texture changes with heat tools

Heat styling is the fastest and most reversible way to change texture. A flat iron straightens curly or wavy hair. A curling iron or wand adds waves or curls to straight hair. A blow dryer with a round brush can smooth frizz and add volume. These changes last until you wash your hair or until moisture and humidity undo the effect, usually within a few days.

The catch is that repeated high-heat styling damages the outer layer of the hair shaft, called the cuticle. Over time, this damage makes hair dull, brittle, and prone to breakage. Using a heat protectant spray before styling reduces but does not eliminate this risk. If you use heat tools daily, your hair will eventually look and feel worse than your natural texture, even when you are not actively styling it.

Lower heat settings and less frequent use extend the life of your hair. Air-drying with a diffuser attachment (for curly hair) or a microfiber towel (for all textures) avoids heat altogether. Braiding damp hair and leaving it overnight creates waves or curls without any heat.

Semi-permanent straightening with chemical relaxers

Chemical relaxers break the bonds that hold your hair's curl pattern in place, permanently straightening the hair that is already grown. They work on tightly coiled or very curly hair and produce a dramatic, long-lasting change. The relaxer is applied to the hair, left for a set time (usually 10 to 20 minutes), then rinsed out. The straightened texture lasts until that hair grows out and is cut off, typically 8 to 12 weeks.

Relaxers are harsh chemicals that weaken the hair structure. They require careful process—leaving them on too long causes chemical burns to the scalp and severe hair breakage. They also make hair more fragile and prone to dryness. Maintenance involves deep conditioning treatments every week, avoiding heat styling when possible, and being careful during washing and combing. Many people find that relaxed hair needs more upkeep than their natural texture.

Relaxers come in different strengths: regular, mild, and no-lye formulas. No-lye relaxers are gentler on the scalp but may not work as well on very coarse hair. If you have never used a relaxer, a professional process is safer than doing it yourself, because a stylist can judge timing and prevent scalp damage.

Semi-permanent curling with perms

A permanent wave, or perm, chemically alters straight hair to add curl or wave. The process uses chemicals similar to relaxers but in reverse: instead of breaking bonds to straighten, a perm breaks bonds and then reforms them around a curling rod, locking in the curl shape. The result lasts 3 to 6 months, until the straight new growth becomes visible and you cut off the curled hair or get a touch-up.

Perms also weaken hair and require the same careful maintenance as relaxers: weekly deep conditioning, minimal heat styling, and gentle handling when wet. Perms work best on hair that is in good condition before treatment. If your hair is already damaged from heat or color, a perm can push it past the point of repair. The curl pattern a perm creates depends on the rod size and the processing time, so results vary. A stylist experienced with perms can show you examples of what different rod sizes produce.

Perms are less popular now than they were 20 years ago, partly because the results can look artificial and partly because they require ongoing maintenance. If you want to experiment with curls, braiding or using a curling iron first lets you see whether you actually like the look before committing to a chemical treatment.

Keratin treatments and smoothing systems

Keratin treatments coat the hair with a protein-based product that smooths the cuticle and reduces frizz. They do not permanently alter the hair structure the way relaxers do, but they do make curly or wavy hair appear straighter and smoother for 2 to 3 months. The treatment is applied to clean, damp hair, left to dry, then sealed with a flat iron. After that, you avoid washing your hair for 48 to 72 hours to let the treatment set.

Keratin treatments are gentler than relaxers because they do not use harsh chemicals to break protein bonds. However, they still involve heat and can dry out the hair if you do not follow the aftercare instructions. Some keratin products contain formaldehyde, a chemical that can irritate the scalp and lungs, so check the label or ask your stylist whether the product is formaldehyde-free.

Results are less dramatic than a relaxer—your hair will be smoother and less frizzy, but curls will not disappear entirely. If you have very tight curls, a keratin treatment may not straighten them enough to notice. They work best on wavy or loosely curled hair.

Damage from repeated texture changes and how to prevent it

Each time you use heat, chemicals, or both, you remove moisture and weaken the protein structure of your hair. One flat iron session causes minimal damage. Flat ironing your hair every day for a year causes significant damage. Combining heat styling with chemical treatments (like using a relaxer and then blow-drying daily) speeds up damage. Eventually, the hair becomes so weak that it breaks off, and no amount of conditioning can repair it—you have to cut it off and grow new hair.

Signs of heat and chemical damage include split ends, a dull or straw-like appearance, breakage when combing, and hair that no longer holds a style. Once the hair is this damaged, the only fix is a haircut. Prevention is much easier than repair.

To change texture while protecting your hair, use the gentlest method that gives you the result you want. If temporary straightening with a flat iron is enough, skip the relaxer. If you want curls, try braiding or a curling iron before getting a perm. Deep condition weekly if you use any heat or chemicals. Trim your hair every 6 to 8 weeks to remove split ends before they travel up the hair shaft. Use a microfiber towel or t-shirt to dry your hair instead of a regular towel, which causes friction and breakage.

Protective styling as an alternative to texture changes

Protective styles—braids, twists, buns, and wigs—let you change your appearance without altering your hair. Braids and twists can be styled to look smooth, wavy, or curly depending on how they are done. Wigs let you try completely different textures, lengths, and colors without any commitment or damage to your natural hair. You can wear a wig for a day or a week and then take it off.

Protective styles work best when they are not too tight—tight braids and twists pull on the hair and cause a type of hair loss called traction alopecia. The style should feel comfortable and not cause pain at the scalp. Protective styles also need maintenance: you still need to wash and condition your hair underneath, and you should take the style down every 4 to 8 weeks to let your hair rest.

If you are unsure whether you want a permanent or semi-permanent texture change, protective styling is a low-risk way to experiment. You can try different looks and see what you actually like before committing to chemicals or heat damage.

Frequently Asked Questions

Can I straighten my curly hair permanently without chemicals?

No. Heat tools and protective styling can make curly hair appear straighter temporarily, but the curl returns when you wash your hair or expose it to humidity. The only way to permanently straighten curly hair is with chemical relaxers, which alter the protein structure of the hair itself. Keratin treatments are a gentler middle ground—they smooth and straighten for 2 to 3 months without the harshness of relaxers.

Will my hair go back to its natural texture after a relaxer?

The hair that has been treated with relaxer will not revert to curly. However, new hair growing from your scalp will be your natural texture. After 8 to 12 weeks, you will have a visible line where the straight relaxed hair meets the curly new growth. You can either cut off the relaxed hair, or get a touch-up relaxer applied only to the new growth. Many people find this maintenance tedious and eventually stop relaxing.

Is it safe to use a relaxer and a perm on the same hair?

No. Combining relaxers and perms on the same hair causes severe damage and breakage because both treatments weaken the hair structure. If you have relaxed hair and want to add curl, wait until the relaxed hair grows out and is cut off, then get a perm on your natural hair. Mixing these treatments is one of the fastest ways to damage your hair beyond repair.

How often can I use a flat iron without damaging my hair?

Using a flat iron once or twice a week with a heat protectant spray causes minimal damage over time. Daily use, even with protection, will eventually make your hair dull and brittle. If you flat iron daily, expect to see noticeable damage within 6 to 12 months. Limiting heat styling to 2 to 3 times a week and taking breaks of several days lets your hair recover moisture between sessions.

What is the difference between a keratin treatment and a relaxer?

A relaxer chemically breaks and reforms the bonds that create your curl pattern, permanently straightening the hair. A keratin treatment coats the hair with protein to smooth the cuticle and reduce frizz, but does not alter the curl pattern. Relaxers produce more dramatic straightening and last longer, but they are harsher and cause more damage. Keratin treatments are gentler but produce subtler results.