Editor's TipEditor's Tip

Why choose a two-part treatment? Keeping the ingredients separate until right before you mix them helps ensure that the formula stays pH-balanced and doesn’t lose its potency over time.

OmniPotent

Birchbox Breakdown

In an era that prizes freshness above all, it makes sense that we’d hold our hair products to the same standard as, say, our daily dose of green juice. This easy-to-whip-up treatment from the pro salon brand activates right before your eyes, so you know that it’s working at peak levels right when you apply it. And yes, we’ll admit to a somewhat geeky fascination with watching the chemical reaction unfold. The gluten- and paraben-free formula goes to work immediately to repair years’ worth of hair damage, leaving strands lustrous, hydrated, and full of healthy bounce.

How it Works

It’s all in the chemistry. As the name implies, Duosity is a two-part treatment. From one side of the tube comes a super-nourishing team of silk amino acids, keratin, and other plant-derived proteins; from the other, a mix of natural humectants and antioxidants (think: aloe, rosemary, and sage) that attract and bind moisture deep into the hair shaft. Meanwhile, sodium bicarbonate helps to balance pH levels (pretty cool, right?). Put both sides together to kickstart the formula and whip your hair into shape.

How to Use

After you shampoo, squeeze a generous 1:1 ratio of both formulas into your palm, mixing them into a foamy, whip-like mask. Work evenly through clean, damp hair, focusing on the ends. Leave three to five minutes before rinsing thoroughly. For best results, we suggest using Duosity once or twice a week.

Phase A (orange): Aqua (Water/Eau), Cetearyl Alcohol, Isopropyl Palmitate, Propylene Glycol, Behentrimonium Methosulfate, Fragrance/Parfum, Lactic Acid, Hydrolyzed Rice Protein, Hydrolyzed Vegetable Protein PG-Propyl Silanetriol, Laurdimonium Hydroxypropyl Hydrolyzed Soy Protein, Silk Amino Acids, Keratin, Polyquaternium-7, Phenoxyethanol, Polyquaternium-37, Panthenol, Glyceryl Stearate, PEG-100 Stearate, Ceteareth-20, PEG-45M, Propylene Glycol Dicaprylate/Dicaprate, PPG-1 Trideceth-6, Benzyl Benzoate, Limonene, Linalool, Methylchloroisothiazolinone, Methylisothiazolinone, Orange 4/CI 15510

Phase B (white): Aqua (Water/Eau), Sodium Bicarbonate, Cetearyl Alcohol, Hydroxypropyl Starch Phosphate, Cetyl Alcohol, Stearamidopropyl Dimethylamine, Glycerin, Fragrance/Parfum, Cinnamidopropyltrimonium Chloride, Rosmarinus Officinalis (Rosemary) Leaf Extract, Salvia Officinalis (Sage) Leaf Extract, Camellia Sinensis Leaf Extract, Aloe Barbadensis Leaf Juice, Phenoxyethanol, Coco- Glucoside, Glycol Distearate, Behentrimonium Methosulfate, Glyceryl Stearate, PEG-100 Stearate, Benzyl Benzoate, Limonene, Linalool, Butylene Glycol, Iodopropynyl Butylcarbamate

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Product Reviews & Sample Feedback

1,351 Reviews
3.6 out of 5 stars
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367
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390
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352
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138
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104
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Most Helpful Customer Reviews

Not wowed

Maybe it was just me, but the lack of directions on this product made it difficult to use. I didn't know when to put it on. Seemed to make my hair soft, but nothing too spectacular.

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Just Ok
Sampled

This hair product was ok. It wasn't all that memorable and I don't plan to purchase.

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Kind of nice
Sampled

I liked it in theory but the foam was really light and didn't cover all my hair

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Duosity
Sampled

Maybe it was the packaging of the sample, but I was not wowed by this product. I think the concept is cool, but based on the sample I don't think I would purchase.

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Great!
Sampled

Really enjoyed this one! My hair was smooth and soft after use, and I loved the smell and foamy texture! I will probably purchase this one

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I've found it!
Sampled

I have tried a plethora of conditioners, masks, leave-in, spray on and on and on.... I have long, thick, coarse and wavy hair. I sometimes have a Brazilian Blow-out done but I'm a good 6 months out of my last one and my hair was showing it. I was hopeful as I applied this product that something would tame my frizz and ease my crazy lately hair. THIS IS THE BEST!! Smooth, soft and relaxed. I am so pleased with this and was sure that when I priced it I would be paying $50. I was pleasantly surprised to find it here on BirchBox for only $25. If your hair has been unruly, I recommend this Duosity hair treatment.

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Hair Treatment

I wasn't WOW'ed by the product and honestly did not enjoy an extra step of having to mix the two products; I just didn't see the need of this.

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OmniPotent

This OmniPotent Duosity Hair Treatment was really cool! There are two separate liquids you mix to activate before you put it in your hair. The treatment left my hair feeling hydrated and more voluminous than before. The only downside is the smell is somewhat chemical-y.

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Hair Treatment

This makes your hair feel so good. I did enjoying using this product. I may by this in the future.

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loved it!!!
Purchased

I have dry hair and this product helped to restore moisture, shine, and left my hair very soft. It also had a great smell too, which is always a plus.

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