NUDA Journal

Science. Ingredients. Ritual.

What certification actually means. How botanicals work. Why your scalp health is the starting point for everything.

NUDA Gloss Bath shine enhancing shampoo, a COSMOS certified shine alternative

Is Kérastase Natural or Clean? What the Ingredients Show

Is Kerastase natural, clean or certified? What the ingredients and L'Oreal ownership actually show on silicones, sulf...

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NUDA Vivid Serum rosemary oil and carton, certified COSMOS Organic by ECOCERT

Natural Hair Care Brands: Which Are Actually Certified? (2026 Comparison)

A verified 2026 comparison of popular natural and premium hair brands (Briogeo, Rahua, Vegamour, Kerastase, Gisou, Ol...

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NUDA Bloom Bath keratin volume boost shampoo, formulated for fine hair

How to Add Volume to Fine Hair (Without Weighing It Down)

Why fine hair goes flat by midday and how to get lift that lasts: the wash, condition and drying routine that adds vo...

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NUDA Vivid Serum rosemary hair and scalp oil, 30 ml glass dropper bottle beside its lilac carton

How to Use Rosemary Oil for Hair (and What to Realistically Expect)

How to use rosemary oil for hair and scalp the right way, what the evidence actually shows, how long it really takes,...

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NUDA Vivid Serum rosemary hair oil with its carton, showing a published INCI list and COSMOS Organic certification
COMPARISONS

Is Gisou Natural? What the Ingredient List Actually Shows

Gisou markets heavily around honey and natural ingredients. But is it a natural or certified brand? The INCI list tel...

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NUDA Rescue Mask intensive repair treatment jar, a COSMOS certified repair option
CERTIFICATION

Olaplex Alternatives That Are Actually COSMOS Certified

Olaplex pioneered bond repair hair care. But it is not a certified natural product. Here is what COSMOS certified alt...

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NUDA Vivid Serum with its carton, showing certification and ingredient information printed on the pack
CERTIFICATION

What Conscious Beauty Buyers Actually Check Before Buying Hair Care

The most informed beauty buyers have developed a specific checklist. It is shorter than you might expect — and most o...

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NUDA Vivid Serum rosemary oil and carton, an example of COSMOS certified hair care sold in the UK and EU
CERTIFICATION

Which Hair Care Brands Are COSMOS Certified in the UK and EU?

COSMOS certification is independently verifiable. Here is how to find certified brands yourself — and what the certif...

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NUDA Rescue Mask intensive repair treatment with plant based keratin, in its cream labelled jar
CERTIFICATION

Botanical Proteins for Hair: What the Science Says

Hydrolysed wheat, rice, and soy proteins are common in certified natural hair care. Here is what the research shows a...

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NUDA Gloss Balm shine enhancing conditioner bottle on a white background
HAIR SCIENCE

Why Your Hair Products Might Be Working Against Each Other

Some common product combinations create conflicts at the ingredient level. Understanding basic ingredient compatibili...

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NUDA Gloss Bath shine enhancing shampoo bottle, certified rather than only marketed as clean
CERTIFICATION

The Difference Between Clean, Natural, Organic, and Certified: In Hair Care

Four words used interchangeably in beauty marketing. Three of them have no legal definition for cosmetics. Here is wh...

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NUDA Deep Mint purifying scalp scrub, 170 ml jar with mint green label
ROUTINE

How Often Should You Use a Scalp Scrub?

Scalp scrubs are not shampoo — they serve a different function and should be used at a different frequency. Here is h...

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