nail care kit
Day & Night Duo

£25
£30
£25

  • Repairs & Nourishes
    Two square glass bottles from Manucurist’s Day Night Duo, each with a white cap and pastel label, are displayed on a light beige background. One is a keratin booster for soft, damaged nails; the other is a nourishing nail mask.
  • Two bottles of Manucurist Day Night Duo nail care on a pale pink background. Text reads: “85% said their nails were harder. 80% noticed more hydration.” Test details appear in smaller print.
  • Close-up: a finger with soft, damaged nails and peeling cuticles labeled Before, and a healthy, smooth nail After using Manucurist Day Night Duo.
  • A close-up shows natural nails as a brush applies treatment. Text describes a 7-day routine for soft, damaged nails using Manucurist&
  • Two clear Manucurist Day Night Duo nail care bottles with white caps float against a soft pink gradient background. One is for keratin boosting and the other is a nourishing nail mask.
  • Three nail care products from Manucurist are arranged side by side: Nail Strengthening Serum in a square bottle, Masque S.O.S. overnight mask for damaged nails, and Concenté Perfecteur in a tube.
  • Two Manucurist Day Night Duo products are arranged side by side on a light beige background, each in different bottles and packaging.
1 5

The day & night routine for soft and damaged-looking nails, an express care to strengthen and regenerate. This routine includes:

  • The Keratin Booster, a 10% concentrated care to instantly help repair fragile nails
  • The S.O.S. Nail Mask, an overnight care to intensely hydrate nails

What type of nails do you have? Complete our analysis by clicking here and find out!

Nail type: Damaged
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Free delivery on +£39 orders

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Description

The day & night routine
7 days to visibly repair soft and damaged-looking nails, with the combined action of two expert care

Day care - The Keratin booster:
The miracle hardening care that instantly strengthens and regenerates soft and damaged-looking nails.

10% concentrated care formula:

  • Plant-based Keratin: Intensely nourishes fragile nails
  • AHA & Gluconolactone: gently exfoliate the nail plate
  • Silicon: helps strengthen the nail
  • Biotin (Vitamin B8): helps harden and fortify the nail
  • Vitamin C: protects the nail from external aggressions

Proven visible results:

  • 85% find their nails harder*
  • 81% find their nails stronger*
  • 81% find their nails were less likely to split*

Its fluid texture is instantly absorbed, leaving the nail with no greasy or sticky finish.

*Clinical test conducted under dermatological supervision on 25 individuals after two weeks of use.

Night care - The S.O.S. Nail Mask:
The overnight mask intensely hydrates very damaged-looking nails. Its unique formula, highly concentrated in emollient and fortifying agents, forms a protective film on the nail surface to boost cell repair.

Proven visible results:

  • 80% find their nails more hydrated**
  • 75% find their nails harder**
  • 75% find their nails stronger**

**Test conducted on a panel of 20 people over 14 days.

How to use it?

Your 7-day care, to repair soft and damaged-looking nails:

  • Day care: On bare nails, apply the Keratin booster 1 to 3 times a day using the brush. Let it dry until fully absorbed.
  • Night care: On bare nails, apply the S.O.S. Nail Mask 2 to 3 nights a week in a thick layer. Let it dry. The next morning, remove it by peeling it off or washing with soapy water.

Pro tip 💅🏻

To complete the routine, nourish the cuticles daily with the Nourishing Nail Pen.

Ingredients/INCI

Super ingredients

INCI list

Nail Strengthening Serum:
ALCOHOL DENAT., AQUA (WATER), PRUNUS ARMENIACA (APRICOT) KERNEL OIL, DIMETHYL SULFONE, PARFUM (FRAGRANCE), GLYCOLIC ACID, POLYACRYLATE CROSSPOLYMER-6, PHAEODACTYLUM TRICORNUTUM EXTRACT, HYDROLYZED CICER SEED EXTRACT, CHENOPODIUM QUINOA SEED EXTRACT, LENS ESCULENTA (LENTIL) SEED EXTRACT, PENTYLENE GLYCOL, GLUCONOLACTONE, ISOPROPYL ALCOHOL, ACETYL CYSTEINE, MAGNESIUM ASCORBYL PHOSPHATE, BIOTIN

96,5% natural origin ingredients*

S.O.S. Nail Mask:
AQUA (WATER), ALCOHOL DENAT., POLYVINYL ALCOHOL, PANTHENOL, PARFUM (FRAGRANCE), ALCOHOL, TRIS(TETRAMETHYLHYDROXYPIPERIDINOL) CITRATE, CI 14700 (RED 4)

80,5% natural origin ingredients*

*Calculation based on the international ISO 16128 standards.
Two square glass bottles from Manucurist’s Day Night Duo, each with a white cap and pastel label, are displayed on a light beige background. One is a keratin booster for soft, damaged nails; the other is a nourishing nail mask.
Two bottles of Manucurist Day Night Duo nail care on a pale pink background. Text reads: “85% said their nails were harder. 80% noticed more hydration.” Test details appear in smaller print.
Close-up: a finger with soft, damaged nails and peeling cuticles labeled Before, and a healthy, smooth nail After using Manucurist Day Night Duo.
A close-up shows natural nails as a brush applies treatment. Text describes a 7-day routine for soft, damaged nails using Manucurist&
Two clear Manucurist Day Night Duo nail care bottles with white caps float against a soft pink gradient background. One is for keratin boosting and the other is a nourishing nail mask.
Three nail care products from Manucurist are arranged side by side: Nail Strengthening Serum in a square bottle, Masque S.O.S. overnight mask for damaged nails, and Concenté Perfecteur in a tube.
Two Manucurist Day Night Duo products are arranged side by side on a light beige background, each in different bottles and packaging.

Day & night routine for soft, damaged-looking nails

Strengthens
and regenerates

Repairs
fragile nails

Intensely hydrates
the nail plate

How to use the Day & Night Routine?
Ideal for soft, damaged-looking nails

  •

    Apply the Keratin Booster 3 times a day

  •

    Apply the S.O.S. Nail Mask in the evening, every 3 days

  •

    Peel off the mask the next morning

FAQs

Our Frequently Asked Questions from our customers and community!

Can I apply the Keratin Booster under Green™ or Green Flash™ polish?

Yes, but it’s essential to cleanse the nail surface after the product has been absorbed to ensure optimal polish adhesion.

Can I use the Keratin Booster with a base coat?

The Keratin Booster should be applied on bare nails only. If you wish to use a base coat, apply it after the care, once the nail has been cleansed.

Can I use the Keratin Booster several times a year?

Yes, you can repeat the care several times a year. It’s recommended to take a break between each care and monitor your nail’s condition over time.

If I want to apply more treatment base coat, should I remove the old coat first?

When using a treatment base coat, there's no need to remove the previous coat.

Our customers talk about us!

Our reviews are collected 28 days after any purchase and these are the reviews of verified buyers only

Overall rating: 4.6540284 / 5 from 211 reviews.

AI Generated Review Summary

The Day & Night Duo offers a comprehensive care routine for nails, providing instant repair and overnight hydration. The Keratin Booster strengthens and solidifies nails, while the SOS Nail Mask intensely hydrates and improves nail appearance. Users report noticeable results within the first week, with healthier and stronger nails.

Summary topics

  • Nail Care Routine (6%): Customers expressed appreciation for the duo, stating that it is perfect for nails and works very well.
  • SOS Mask Results (8%): Customers loved the results of the SOS mask, finding it easy to apply and providing a quick and pleasant result.
  • Keratin Booster Effectiveness (5%): Customers expressed appreciation for the keratin booster, stating that it quickly makes nails stronger and more solid.
  • Scent (6%): Customers appreciated the pleasant scent of the skincare routine, especially the keratin booster.

Review topics: ["smell","feel","improvement","problem","look","boost","absorbs","result","nails","mask","duo","treatment","effect","difference","care","routine","application","works","keratin","use","polish","combo","become","serum","hands","ridges","drying","grow","splitting","shine"].

Review highlights

  • "Keratin booster is really easy to use, smells very nice and penetrates quickly." — annie c.
  • "SOS mask also smells very nice, it applies very well but it comes off a bit at night if you tend to move around a lot." — annie c.
  • "Very effective masks, they leave the nails much stronger and with a flawless natural shine." — Ana F.

Reviews

The Day & Night Duo

"The Day & Night Duo helped my nails recover so quickly after removing my polish. I was thrilled with the almost immediate results. Another high quality product from Manucurist!"

— Abby O. (5/5)

I’m loving my duo set.

"I’m loving my duo set. My nails were in a terrible state and now so much strong and looking good. I’ve add active blur and my nails look fantastic again."

— cnicholls25@gmail.com ‎. (5/5)

Assez bluffant : le "kératine

"Assez bluffant : le "kératine booster" disparaît immédiatement, comme bu par les ongles. Et le masque est la toute dernière chose à faire, avant de se coucher. J'attends beaucoup de ces 2 produits ! Et il me semble bien que mes ongles ont meilleure apparence ✌️"

— Catherine H. (5/5)

Mes ongles étaient vraiment pas

"Mes ongles étaient vraiment pas au top c'est la 1ère fois que je trouve les produits miracles. Jen ai essayé quand mes ongles étaient fragiles, fatigués mais là franchement je suis bluffée."

— Anne L. (5/5)

The keratin product has been

"The keratin product has been really improving my peeling nails. I'm only starting to use the mask in the evening, but seems good so far."

— DEBORAH M. (5/5)

- Kératine Booster : Un

"- Kératine Booster : Un vero e proprio gioiello, soprattutto per chi ha smesso di fare la ricostruzione in gel e ha bisogno di recuperare le unghie rovinate. Ha un odore gradevole e molto leggero. Se si lascia assorbire da solo fa comunque abbastanza in fretta, ma massaggiandolo bene è ancora meglio perché spinge i principi attivi in profondità e stimola la microcircolazione alla radice dell'unghia. Applicandolo con costanza 3 volte al giorno, i risultati si vedono subito: durante la prima settimana l'unghia lo 'beveva' all'istante (si vedeva proprio quanto le unghie fossero disidratate e avessero bisogno di nutrimento!), mentre già dalla seconda l'assorbimento è diventato più graduale perché la lamina si stava riprendendo. Una boccetta dura quasi due mesi con un uso così continuo, quindi ha un'ottima resa. Consigliatissimo!! - Masque S. O. S. : Un prodotto fantastico per completare la cura serale! Si applica la sera e bisogna aspettare giusto un momento che si asciughi: crea una sorta di pellicola protettiva che avvolge l'unghia per tutta la notte. La mattina dopo si toglie semplicemente sotto l'acqua tiepida (o viene via da sola delicatamente) senza bisogno di usare alcun solvente. Ha aiutato tantissimo le mie unghie a reidratarsi in profondità e a ritrovare forza. Un passaggio fondamentale nella mia routine."

— Sergio S. (5/5)

aiuta sicuramente il rinforzo e

"aiuta sicuramente il rinforzo e la cura delle unghie ma sinceramente mi aspettavo di più"

— alberta t. (4/5)

Incredibile, mia figlia l'ottava con

"Incredibile, mia figlia l'ottava con le unghie deboli e che si sfaldavano da ormai due anni. In 3 settimane di trattamento ha risolto. Pensavo migliorasse, non risolvesse. . . Sono stupita. Ora lo fa ogni tanto, giusto per tenerle curate"

— Silvia C. (5/5)

Tenía las uñas muy deterioradas,

"Tenía las uñas muy deterioradas, se me abrían en capas y se me rompian. He conseguido que me crezcan sin q se rompan tanto. Se ven más sanas."

— Esperanza R. (5/5)

très bon duo pour prendre

"très bon duo pour prendre soin de mes ongles !"

— Valérie D. (5/5)

Q&A