The Y Theorem Concentrate

Rated 4.8 out of 5
Based on 5 reviews
€145
Sale products can be returned within 14 days.

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A 7-day treatment program designed to repair the skin, The Y Theorem Concentrate works to nourish and strengthen the epidermal barrier through a blend of active ingredients specifically formulated to address compromised and stressed complexion.

+22% Increase In Hydration*

-23% Reduction In Redness**

The ampoules can be used independently or combined over a two, three or four week period with those from other collections.

DISCOVER JOANNA CZECH'S CONCENTRATE PRESCRIPTIONS

DISCOVER AMPOULES - THE TRANSFORMATIVE SKIN SYSTEM


NAC Y²: Boosts production of the master antioxidant essential for all cellular repair, Glutathione.

GLUTATHIONE: The master antioxidant, a key component in keeping the skin healthy.

ECTOIN: Protects the skin from cell-damaging factors like pollution, sunlight, temperature and stress.

+22% Increase In Hydration*
-23% Reduction In Redness**

*Average result after 14 days of use. 20 volunteers participated in an independent clinical study. A Corneometer was used to assess the hydration within the skin after 14 days of use.

**Average result after 14 days of use. 20 volunteers participated in an independent clinical study. A Mexameter was used to assess the redness of the skin after 14 days of use.

Place the opener onto the ampoule and break away from the body. Dispense the solution into hands and apply onto the face and neck, patting gently in upward motions. Be sure to use the entire ampoule. Repeat day or night for 7 days alongside your usual skincare regime. Use alongside or in place of your serum. Use following cleansing and toning and before moisturiser.

Support this routine with our Intensive, Reparative and Regenerative face masks.

  • Non digestible
  • Store standing up-right
AQUA / WATER / EAU, METHYLPROPANEDIOL, PROPANEDIOL, ECTOIN, GLYCERIN, MAGNESIUM ASCORBYL PHOSPHATE, PEG-40 HYDROGENATED CASTOR OIL, CAPRYLYL GLYCOL, PROPYLENE GLYCOL, GLUTATHIONE, MELALEUCA ALTERNIFOLIA (TEA TREE / L'ARBRE À THÉ) LEAF OIL, AESCULUS HIPPOCASTANUM (HORSE CHESTNUT / MARRONNIER D'INDE) SEED EXTRACT, PHENYLPROPANOL, TOCOPHERYL ACETATE, DISODIUM EDTA, ACETYL CYSTEINE, LIMONENE. Free from: Fragrance, silicones, parabens and sulphates.
average rating 4.8 out of 5
Based on 5 reviews
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5 Reviews
Reviewed by Melody D.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Amazing Healing Powers

I’ve had two sessions of Broadband Light Treatment. The first time I used the product recommended by the esthetician, and the second time I used this set of concentrates. The difference in healing was amazing! I healed so much faster the second time using the Y Theorem Concentrate. My skin not only looks healthier after using this product, but it IS healthier! I can see where this product would be great anytime, but it is perfect for applying after a procedure. Like a magic potion! Definitely recommend. The scent is very potent, but I stopped noticing it as much after the first use.

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Reviewed by No n.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Concentrate

After using the concentrate my skin looked fresher and healthier. After too much sun tanning my skin was getting drier but with a little help with the serum it is slowly recovering.

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Reviewed by Julia T., from United Kingdom
Verified Buyer
I recommend this product
Skin Type
Ageing
Age
35-44 y.o 45-55 y.o
Skin Concerns
  • Redness & Inflammation
  • Ageing
Rated 4 out of 5
Review posted

Excellent Product, Terrible Smell

I have previously used other concentrates in the range and wanted to give this one a try after reading a great review from a beauty editor. I can't fault the product but it smells like bin juice, which is really off putting. For that reason I would probably not buy it again although I would still recommend it to someone with a stronger stomach!

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111SKIN EU

Hi Julia,

Thanks so much for your review. The scent that you described is from our NAC Y2. We have decided not to mask it with any fragrance, in order to preserve the efficacy of this concentrate ampoule. I'm sorry to hear that the scent is too strong for your preference. The rest of the range doesn't have such scent. And if you like the result of the NAC Y2, I'd recommend the Contour Firming Concentrate for you.

https://111skin.co.uk/products/the-firming-concentrates-ampoules

Best,
111SKIN x

Reviewed by PJC, from United Kingdom
Verified Reviewer
I recommend this product
Skin Type
Combination
Age
25-34 y.o
Skin Concerns
  • Large Pores
  • Ageing
Rated 5 out of 5
Review posted

The scent!

This is my 2nd collection after trying the Firming collection. It has a pungent scent, which I wasn't sure about. I reached out to their Customer Service to inquire what that is, they confirmed that is from the brand's signature NAC ingredient. By the 4th application, I got used to the scent more. My other "beauty connoisseur" friend on the other hand told me the scent translates to strength for him!

Anyway, I've just finished the course and I am happy to report that I'll recommend this to my friends based on the result that I see.

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Reviewed by Michael H., from Germany
Verified Buyer
I recommend this product
Skin Type
Combination
Age
35-44 y.o 45-55 y.o
Skin Concerns
  • Redness & Inflammation
  • Sensitive Skin
  • Ageing
Rated 5 out of 5
Review posted

Impressive

I used the ampoules for the first time and the effect is absolutely impressive. I look like after 14 days of vacation.

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