Why Is My Hair Curly Underneath But Straight On Top?

Hair texture can vary significantly from one person to another and even within different areas of the same person's scalp. This variation is influenced by a combination of genetic, environmental, and hormonal factors.

Understanding these influences can help you better care for your hair, especially if you’re dealing with mixed textures, such as curly hair underneath and straight hair on top. Therefore, here is a detailed answer to why is my hair curly underneath but straight on top.

Hormonal Influences

Hormonal fluctuations during puberty, pregnancy, menopause, or due to conditions like thyroid disorders can affect the shape and activity of your hair follicles. These hormonal shifts can lead to variations in texture, particularly if different areas of your scalp respond differently to hormonal changes.

For example, the top layer of your hair might be more exposed to these hormonal influences, leading to a change in texture, while the hair underneath remains closer to its original state. 

Genetics and Hair Texture

Genes passed down from your parents dictate the shape of your hair follicles, which in turn influences whether your hair is straight, wavy, or curly. Round follicles produce straight hair, while oval or asymmetrical follicles lead to wavy or curly hair.

However, these genetic factors don’t always produce a uniform hair texture across your scalp. It's possible to inherit a combination of different follicle shapes, leading to variations in texture in different areas.

For Instance

If one parent has straight hair and the other has curly hair, you might find that your hair is straighter on top and curlier underneath, reflecting a mix of these inherited traits. 

Additionally, ethnic background plays a significant role in hair texture as well, as certain hair types are more common in specific populations. Therefore, understanding the impact of genetics and hormones on your hair can help you tailor your hair care routine to address these variations effectively. 

Curly hair results from complex interactions between the shape of hair follicles, the distribution of certain proteins, and environmental factors. Here’s a closer look at these key elements, which yet again answers the question of why is my hair curly underneath and straight on top.

Hair Follicle Shape

Hair follicles, which are tiny, tube-like structures embedded in the scalp, influence the shape of the hair strand as it grows. Round follicles produce straight hair because the hair strands grow out smoothly without bends. In contrast, follicles that are oval or irregularly shaped create wavy or curly hair.

The uneven shape of these follicles causes the hair strands to bend and twist as they emerge, resulting in curls or waves. This intrinsic characteristic of hair follicles is a key determinant of whether your hair is straight, wavy, or curly.

Environmental Factors

Humidity, for example, can affect the natural curl pattern of hair. While high humidity levels cause curly hair to absorb moisture, often leading to enhanced curls and increased frizz. Low humidity, on the other hand, can make curls appear looser and more defined. 

Similarly, excessive heat from styling tools or prolonged sun exposure can alter hair texture, temporarily straightening curls or causing them to lose their definition. 

For Example 

Not to forget, using various hair care products and treatments also impacts how hair responds to its environment. Moisturizing and curl-enhancing products can help define and maintain curls. At the same time, products designed to smooth or straighten hair may temporarily alter its natural texture.

Why is my straight hair turning wavy male? It could be a question many men and women find themselves asking as they experience changes in their hair texture. To answer, it might be the result of the common hair care mistakes which are as follows-

Overprocessing

Overprocessing happens when hair is subjected to frequent chemical treatments or excessive heat styling. Repeated coloring, perming, or relaxing can weaken the hair structure, causing dryness, breakage, and changes in texture.

This damage often results from stripping the hair of its natural oils and moisture, making it brittle and prone to frizz. 

Prevention: To avoid overprocessing, it's important to limit the use of harsh chemicals and heat tools. Prevention also requires using deep conditioning treatments and seeking professional advice on maintaining healthy hair.

Product Buildup

Product buildup occurs when styling products, conditioners, and shampoos accumulate on the hair and scalp over time. This residue can weigh down the hair, making it look greasy or limp.

Furthermore, it can also block moisture from penetrating the hair shaft, leading to dryness and scalp issues.

Prevention: To prevent buildup, use clarifying shampoos regularly, choose lighter hair products, and ensure that products are thoroughly rinsed out. Addressing these common mistakes can help maintain your hair's health, shine, and overall appearance.

Curls can be more delicate and prone to dryness or damage compared to other hair types, so adopting a routine that addresses these specific needs is essential. This makes maintaining healthy curls a much needed practice which can be done by understanding the following.

Customizing Your Routine

Customizing your routine means selecting products specifically designed for curly hair, such as sulfate-free shampoos, curl-enhancing conditioners, and leave-in treatments. It also involves adjusting how often you wash your hair and choosing styling techniques that suit your curl type.

For Instance

Curly hair often benefits from less frequent washing to maintain natural oils and use gentle methods. It also requires hydrating products that enhance curl definition without causing buildup.

Therefore, tailoring your routine to address your specific curl pattern and hair condition can help maintain healthy, vibrant curls.

Layered Haircuts

Layers help distribute volume more evenly, preventing curls from looking too heavy or flat at the top while maintaining a balanced look. As layers can significantly benefit curly hair, incorporating them can enhance the natural curl pattern.

Plus, layers make curls appear more defined and less prone to tangling. This type of haircut also helps manage bouncy curls, which gives them a more flattering appearance.

Moisture and Hydration

Curly hair tends to be drier than other hair types because the natural oils from the scalp have a harder time traveling down the twists and turns of each strand. To combat this, it's important to use moisturizing shampoos, conditioners, and deep conditioning treatments that provide intense hydration.

Care: Applying leave-in conditioners and oils can also help lock in moisture and prevent frizz.

Also, maintaining proper hydration ensures that curls remain soft, manageable, and resilient against environmental factors that can lead to dryness.

Yes, it can be a sign of damage. When hair changes from straight to wavy, it might indicate underlying issues such as overprocessing from chemical treatments, excessive heat styling, or environmental stress.

Damage can alter the natural structure of the hair, causing it to lose its original texture and develop new patterns.

Common Example

Overuse of heat tools can weaken the hair cuticle, making it more prone to changes in texture. Similarly, exposure to harsh chemicals or environmental factors can disrupt the hair's natural pattern, leading to unexpected changes in texture.

If the change is sudden or accompanied by other signs of damage, it's a good idea to assess your hair care routine and consult a professional to address potential issues.

How Common Is It?

Changes in hair texture, such as straight hair turning wavy, are relatively common and can occur due to various factors. Many people experience some degree of change in their hair texture over time, often influenced by hormonal shifts, aging, or environmental conditions.

Common Example

As mentioned earlier, hormonal changes during puberty, pregnancy, or menopause can impact hair texture. Similarly, aging can also lead to alterations in hair structure, making it more prone to changes in texture. 

Additionally, environmental factors such as humidity or prolonged exposure to heat can affect how hair behaves. While not everyone will experience a significant change in texture, variations in hair patterns are a normal part of many people’s hair journeys.

Choosing the right hair products is crucial for maintaining healthy and well-styled hair. Different hair types have specific needs, so selecting products tailored to your hair's texture can make a significant difference in its appearance and health.

For Curly Hair

• Look for products that provide hydration, enhance curl definition, and reduce curl frizz. 

• Moisturizing shampoos and conditioners are essential to hydrate curls and prevent dryness. 

• Leave-in conditioners help maintain moisture and define curls without weighing them down. 

• Similarly, curl creams or mousses can give your curls a more structured and bouncy look. 

• Additionally, anti-frizz serums and lightweight oils can help control frizz and add shine while keeping your curls soft and manageable.

For Straight Hair

• Choose products that maintain smoothness and add shine while preventing oiliness and flatness. 

• Use sulfate-free shampoos and lightweight conditioners to help cleanse and hydrate without weighing the hair down. 

• Also, purchase shine-enhancing serums or lightweight oils that adds gloss and reduce frizz. 

• Volumizing mousses or root-lifting sprays can help add body and fullness to straight hair.

• Use heat protectant sprays to shield your hair from damage.

When dealing with different hair textures, finding effective styling techniques can help achieve a cohesive and polished look. Whether you’re blending textures or embracing your natural style, the right methods can enhance your hair’s appearance and maintain its health.

Blending Textures

This process involves using styling techniques and products to create a more uniform appearance when your hair has varying textures, such as straight on top and curly underneath. As mentioned earlier, layered haircuts can be particularly effective, as they help distribute volume and shape more evenly. 

Similarly, texturizing sprays and curl enhancers can help blend the textures by adding definition to curls and smoothing out straighter sections. Additionally, using a diffuser when drying can enhance natural curls while minimizing the contrast with straight sections.

Embracing the Natural Look

Embracing the natural look means working with your hair’s inherent texture rather than trying to alter it drastically.

For curly hair, this involves using curl-defining creams or mousses to enhance and define your natural curls without applying excessive heat.

For straight hair, opting for smoothing serums and light styling products can maintain a sleek, natural appearance without making the hair look flat or greasy.

Embracing your natural texture also means adapting your hair care routine to nourish and support your hair’s unique characteristics. Thus allowing it to look its best in its natural state.

Here are the answers to some commonly asked questions.

Can This Be Fixed?

Whether changes in hair texture can be fixed depends on the underlying cause. If the change is due to temporary factors like humidity or product buildup, adjusting your hair care routine or using specific products can help restore your hair to its desired state. 

However, reverting to the original texture may be more challenging if the change is related to permanent factors such as hormonal shifts, aging, or genetic predispositions. In such cases, embracing the new texture and finding ways to work with it might be the most effective approach.

Will My Hair Texture Change Over Time?

Yes, hair texture can change over time due to factors such as hormonal shifts, aging, and environmental influences. These changes are often a natural part of life and can affect the texture and appearance of your hair.

To prevent frizz, follow these tips:

• Dry Hair Gently: Instead of rubbing your hair with a towel, gently blot it dry. Use a microfiber towel or an old T-shirt to reduce friction, which can cause frizz.

• Use Moisturizing Products: Opt for shampoos, conditioners, and styling products designed to hydrate and smooth the hair cuticle. Moisture helps reduce frizz and keeps hair manageable.

• Avoid Heat Overuse: Excessive heat styling can damage the hair cuticle and lead to frizz. Use heat tools sparingly, and always apply a heat protectant before styling.

• Use Anti-Frizz Products: Incorporate serums, oils, or anti-frizz sprays into your routine to help seal the hair cuticle and prevent moisture loss.

• Maintain Hair Health: Regular trims, a balanced diet, and proper hydration can all contribute to healthier hair that is less prone to frizz.

Consider the following types of products to enhance your curly locks:

• Curl creams as they help define and shape curls, providing hold without stiffness. 

• Mousses are lightweight and volumizing, which adds bounce and definition to curls without weighing them down.

• Leave-in conditioners provide hydration and help define curls while reducing frizz. 

• Curl gels offer a strong hold and can help define and separate curls.

• Curl serums add shine and control frizz while enhancing curl definition.

This blog explores the phenomenon of having hair that is curly underneath but straight on top, offering insights into why these texture changes occur and how to manage them effectively. We discuss the various factors contributing to hair texture changes, such as hormonal shifts, aging, and environmental influences. 

It further provides practical advice on maintaining healthy curls including tips on customizing your hair care routine and ensuring proper moisture and hydration. It also covers styling techniques for blending textures and embracing your natural look.