Why Is My Hair Curly Underneath But Straight On Top?

Why Is My Hair Curly Underneath But Straight On Top

Are you puzzled by the fact that your hair is curly underneath but straight on top? You’re not alone! Many people experience this unique hair pattern, and it can leave you scratching your head (pun intended). But worry not, we’re here to dive into the science behind this hair conundrum and shed some light on the factors that contribute to these diverse hair textures. Let’s untangle this hair mystery together!

Why Is My Hair Curly Underneath But Straight On Top?

My Hair Curly Underneath But Straight On Top

To understand the reasons behind this intriguing hair pattern, we first need to look at the factors that contribute to hair texture. There are a few key players that come into play, including genetics, hair follicle shape, and environmental factors. Let’s break down these elements and see how they affect your hair.

Related: Does Hair Dye Kill Lice?

1. The Genetics Game

Your hair texture is largely determined by your genes. If your parents or ancestors had curly hair, there’s a good chance you’ll have curls as well. But if you’re a mixed bag with both straight and curly hair in your family tree, you may end up with a combination of textures.

2. Hair Follicle Shape: The Unsung Hero

The shape of your hair follicle is responsible for determining whether your hair is curly or straight. Straight hair comes from round follicles, while curly hair grows from oval-shaped ones. It’s possible to have a mix of follicle shapes on your scalp, which results in the curly-underneath-straight-on-top phenomenon.

3. Environmental Factors: Hair’s Frenemy

Environmental factors, such as humidity and heat, can also impact your hair’s texture. Humidity can cause your hair to absorb moisture, leading to frizz and curls. Heat, on the other hand, can cause your hair to lose moisture, making it more prone to straightening.

Embracing Your Unique Hair Pattern

Now that we’ve explored the reasons behind your mixed hair texture, it’s time to talk about how to embrace and make the most of it. With the right hair care routine and styling tips, you can rock your curly-underneath-straight-on-top locks with confidence.

1. Shampoo & Conditioner: A Match Made in Hair Heaven

Choose a shampoo and conditioner specifically designed for mixed hair types. Look for sulfate-free shampoos and moisturizing conditioners to ensure your hair is well-cared for, regardless of its texture.

2. Styling Products: Your Hair’s Secret Weapon

Using the right styling products is crucial for managing mixed hair textures. Opt for anti-frizz serums or curl-enhancing creams to define your curls and keep frizz at bay.

3. Hair Care Routine: Consistency is Key

Establish a consistent hair care routine to keep your hair healthy and manageable. Trim your hair regularly, deep condition it once a week, and avoid excessive heat styling to prevent damage.

4. Experiment with Hairstyles: Mix It Up!

Embrace your unique hair pattern by trying out different hairstyles that showcase both your straight and curly strands. Opt for braids, updos, or half-up styles to play with your hair’s natural texture.

Related: Does Straightening Your Hair Kill Lice?

The Science Behind Hair Curliness

Science Behind Hair Curliness

Understanding the science behind hair curliness can help you better care for your unique hair pattern. Let’s delve into the factors that contribute to curliness and how they relate to having curly hair underneath and straight hair on top.

1. The Role of Hair Protein: The Backbone of Your Curls

Keratin, the primary protein found in your hair, plays a significant role in determining your hair’s curliness. The distribution of specific chemical bonds within the keratin protein can dictate the degree of curl. If your hair has a mixed texture, it’s likely that the protein structure differs between the straight and curly sections.

2. The Influence of Hair Growth Rate: A Curly Conundrum

Another factor that can impact hair curliness is the rate at which your hair grows. If the hair strands underneath grow at a different rate than those on top, it could result in varying curl patterns. This variation in growth rate may contribute to the unique combination of curly and straight hair.

Hair Care Tips for Mixed Textures

Managing mixed hair textures can be challenging, but with the right hair care tips, you can keep your locks looking fabulous. Here are some suggestions to help you maintain and style your curly-underneath-straight-on-top hair.

1. Detangling: Patience is a Virtue

Gently detangle your hair, starting from the ends and working your way up to the roots. Use a wide-tooth comb or a brush specifically designed for mixed hair textures to avoid breakage and damage.

2. Drying Techniques: Show Your Hair Some Love

Instead of rubbing your hair dry with a towel, try using a microfiber towel or a cotton t-shirt to gently scrunch and absorb excess moisture. This method helps reduce frizz and keeps your curls intact while respecting the straight sections of your hair.

3. Heat Styling: Proceed with Caution

When using heat-styling tools like straighteners or curling irons, always apply a heat protectant to shield your hair from damage. Additionally, try to limit heat styling to special occasions or once in a while, to keep your hair healthy and maintain its natural texture.

4. Embrace Protective Hairstyles: A Win-Win Solution

Incorporating protective hairstyles, such as braids, twists, or buns, can help reduce damage and prevent breakage for your mixed hair textures. Not only do these styles provide a practical solution for managing your curly-underneath-straight-on-top hair, but they also offer a chic and trendy look that highlights your unique hair pattern.

Related: Does Hair Straightener Kill Lice?

Frequently Asked Questions

1. Can I change my hair texture permanently?

While you can’t change your hair texture permanently, you can use treatments like relaxers, perms, or keratin treatments to alter it temporarily. Keep in mind that these treatments can be damaging, so proceed with caution.

2. Why do I have a mix of hair textures?

A mix of hair textures occurs when your scalp has differently shaped hair follicles or is influenced by varying environmental factors. This can result in some areas of your hair being curly, while others remain straight.

3. Can I make my hair uniformly curly or straight?

You can use styling tools like curling irons or straighteners to achieve a more uniform hair texture temporarily. Using heat styling tools too often can cause hair damage, so be sure to use heat protectants and take breaks to maintain hair health.

4. Is it normal for my hair texture to change over time?

Yes, it’s normal for hair texture to change over time due to factors like aging, hormonal changes, or even medical treatments. If you notice a sudden change in your hair texture, it’s a good idea to consult a medical professional to rule out any underlying issues.

5. How can I enhance my natural curls?

To enhance your natural curls, use products specifically designed for curly hair, like curl-enhancing creams, and avoid heavy silicones that can weigh down your curls. You can also try scrunching your hair while it’s damp or using a diffuser attachment on your hairdryer to boost your curl pattern.


Having hair that’s curly underneath but straight on top is a unique characteristic that you can learn to embrace and love. By understanding the factors that contribute to this hair pattern, you can take better care of your tresses and experiment with various styles to make the most of your distinctive hair texture. So go ahead, flaunt those unique locks with pride, and let your hair be a beautiful reflection of your individuality!