Why is Curly Hair Always Curlier Underneath? The Science Behind the Mystery!

As someone with curly hair, you've probably noticed that the underside of your hair tends to be curlier than the top layer. But why is that? In this blog post, we'll explore the science behind this curly hair mystery and give you some tips to keep those bouncy curls looking their best!

Firstly, let's discuss the structure of curly hair. Curly hair has a unique shape that makes it prone to dryness and frizz. The twists and turns of curly hair make it difficult for natural oils to travel down the hair shaft, which can leave hair feeling dry and brittle. This dryness causes hair to shrink and curl, resulting in those beautiful bouncy curls we all love.

Now, let's talk about the underside of your hair. The underside of your hair is usually more protected from external elements such as wind and sun, which can cause hair to become dry and damaged. This protection helps to retain moisture and keep hair healthier, which in turn makes it even curlier. Additionally, the weight of the top layer of hair can flatten and pull curls down, making the underside appear even curlier in comparison.

Another factor that contributes to the curliness of the underside is the direction in which the hair grows. Hair typically grows in a spiral or helix shape, which means that the hair on the underside of your head is growing in the opposite direction to the hair on the top of your head. This creates a natural lift and curl, making the hair on the underside appear even curlier.

So what can you do to keep those curls looking their best? Here are some tips:

  1. Use a sulfate-free shampoo and conditioner that's specifically designed for curly hair. Sulfates can be harsh and strip natural oils from hair, making it even drier. See our recommendations here.

  2. Apply a leave-in conditioner to help keep hair moisturised throughout the day. See our recommendations here.

  3. Avoid brushing your hair when it's dry, as this can cause frizz and breakage. Instead, detangle hair when it's wet and use a wide-tooth comb or your fingers. Shop brush's here.

  4. Use a diffuser when blow-drying hair to help enhance curls and reduce frizz. The best diffuser that fits "most" hairdryers is here.

The reason why curly hair is always curlier underneath can be attributed to a combination of factors, including dryness, protection, weight, and the direction of hair growth. By understanding the science behind curly hair, you can better care for your curls and keep them looking their best!

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