Why NOI is important in haircare

What is the natural origin index (NOI)?

If you’ve searched for natural haircare, you know how unclear “natural” can be. The Natural Origin Index (NOI) clears that up.

It shows the percentage of ingredients from natural sources like plants or minerals. For example, a 98% NOI means 98% of ingredients come from nature. It’s a clear way to see how natural a product truly is.

Why it’s important for your natural haircare routine?

Many brands claim to offer natural haircare, but without the NOI, you may get more synthetics than expected.
Take silicones, for instance. They create an instantly silky feel but sit on your hair’s surface, coating it. While your hair might feel smooth at first, over time, silicones block moisture and nutrients. That’s especially harmful for curly, fine, or fluffy hair.
In contrast, truly natural haircare works from within. It nourishes, hydrates, and strengthens without leaving build-up.
That’s why the NOI is so useful when looking for products that support long-term hair health.

Why Deluge is proud to share our numbers (and why we’re not 100% natural)

At Deluge, we don’t just say we’re a natural haircare brand, we show you exactly how natural we are. Every formula is crafted with care, intention, and full transparency.

Here’s a breakdown of the Natural Origin Index for each product:

NR.01 Gentle Cleansing Shampoo: 95,36%
NR.02 Nurturing Conditioner: 99,07%
NR.03 Fortifying Scalp Serum: 99,34%
NR.04 Ultimate Hair Oil: 98,50%
NR.05 Moisturising Hair Mask: 98,69%

So why not 100%? A few ingredients, like perfume and preservatives, aren’t classified as natural. But they are essential for keeping our natural hair care products safe, effective, and enjoyable to use.

We only use safe, non-disruptive scents and our gentle preservatives ensure your product stays fresh, without harming your scalp or the environment.

Real natural haircare takes time

We created Deluge to offer unique haircare that honors both your hair and the planet. We spent a long time on perfecting our formulas because we believe that the best natural hair care products don’t chase trends, they build long-term health.

Whether you’re looking for curly hair products, a solution for fine hair, or a clean approach to caring for fluffy hair, our products are designed to work with your hair’s natural structure, not against it.

With ingredients like botanical oils, plant proteins, and herbal extracts, our natural haircare line helps repair, hydrate, and strengthen from the inside out.

Natural care, real results

Your hair deserves more than surface-level shine. It deserves nourishment. Protection. Balance. That’s why natural hair care matters and why the NOI is one of the most important things to look for when choosing the best hair care products for natural hair.

At Deluge, every formula is thoughtfully made for a cleaner, kinder haircare routine. One that’s safe, effective, and beautifully simple, for every wave, curl, and strand.