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Nail care

Day & Night Duo

$39
$45
$39

  • The Manucurist Day Night Duo, featuring two nail treatments, is displayed side by side on a pale background.
  • The Manucurist Day Night Duo includes a keratin serum booster (light green) and a nourishing S.O.S. nail mask (pink), perfect for regenerating your nail care routine.
  • Two bottles of Manucurist’s Day Night Duo are shown on a pink background. Text highlights clinical results: 85% saw harder nails and 80% observed more hydration after using this nail treatment and keratin serum.
  • Side-by-side images show a finger’s dry, peeling cuticles before and smooth, healthy cuticles after using Manucurist Day Night Duo. Each image is labeled to highlight the transformation.
  • A close-up of a person applying Manucurist&
  • The Manucurist Day Night Duo boxed manicure set includes a white keratin serum booster and a pink S.O.S. nail mask, all displayed on a light beige background.
  • Two clear Manucurist Day Night Duo nail care bottles with white caps are set against a soft pink background. The duo includes a keratin serum booster and Masque S.O.S nail mask, both for effective nail treatment.
  • Three manicure products for nail care on a light pink background: a square bottle of Manucurist Nail Strengthening Serum, a square bottle of Masque S.O.S. overnight nail mask, and a tube of Concentré perfecteur.
  • Day Night Duo by Manucurist: two luxurious manicure treatments presented on a light beige background, representing premium nail care from the esteemed Parisian brand.
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The day & night routine for soft, damaged-looking nails  — an express treatment designed to strengthen, nourish, and restore. This routine includes:

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

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Included in the kit
  • A clear glass bottle of Manucurist Nail Strengthening Serum with a white cap and green label, highlighting its strengthening benefits for damaged nails, is displayed against a pale beige background.
    Nail Strengthening Serum
    $25
    $25
    Strengthens and helps regenerate soft or damaged-looking nails
    Strengthens
  • A bottle of Manucurist S.O.S. Nail Mask, a hydrating nail treatment with pink liquid and a white cap, sits against a light pink background. The label shows both French and English text.
    S.O.S. Nail Mask
    $25
    $25
    Regenerating and moisturizing night mask
    Regenerates
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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 treatments

Day care - The Keratin Booster:
The miracle nail strengthening serum that instantly hardens 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% found their nails harder*
  • 81% found their nails stronger*
  • 81% found 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 emollients and fortifying agents, forms a protective film on the nail surface to boost cell repair overnight.

Proven visible results:

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

**Test conducted on a panel of 20 people over 14 days.
How-to-use the Day & Night Routine?

Your 7-day care routine, 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. 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.
Sustainable Packaging

Green S.O.S Base Coat

Glass Bottle: Emptied, cleaned and dried bottles can either be reused or placed in a recycling bin seperate from other materials to avoid contamination. If your local manicapality does not accept glass for recycling, bottles can be brought to a collection center. No need to remove labeling.

Plastic Cap (Plastic-type #5 - Polypropylene): Clean and remove cap from brush attachment and place in recycling bin or bring to a local collection center.

Nail Brush (Plastic-type #4 - Low Density Polyethylene): Clean and remove cap from brush and place in recycling bin or bring to a local collection center.

Label: No need to remove label as glass recycling processes will remove any labelilng

Box (Kraft Paper Box): Paper box can be unfolded and added to paper recycling bin or brought to a local collection center, Kraft paper box can also be added to any compost bin.

As always, verify your local municipality's recycling regulations and procedures and for more information please go to berecycled.org/search or search.earth911.com

Green Oil

Glass Bottle: Emptied, cleaned and dried bottles can either be reused or placed in a recycling bin seperate from other materials to avoid contamination. If your local manicapality does not accept glass for recycling, bottles can be brought to a collection center. No need to remove labeling.

Glass Dropper: Remove product completely and seperate from lid. Once emptied, cleaned and dried, glass can be placed in a recycling bin seperate from other materials to avoid contaimination. If your local manicapality does not accept glass for recycling, glass dropper can be brought to a collection center.

Plastic Lid (Plastic type #5: Polypropylene and Nirtile): Seperated, cleaned and dried lid attachment and pressure squeeze attachment can be added to recycling bin seperate from other materials to avoid contaimination or taken to a collection center.

Label: No need to remove label as glass recycling processes will remove any labelilng

Box (Kraft Paper Box): Paper box can be unfolded and added to paper recycling bin or brought to a local collection center, Kraft paper box can also be added to any compost bin.

As always, verify your local municipality's recycling regulations and procedures and for more information please go to berecycled.org/search or search.earth911.com
Ingredients (INCI)

Super ingredients

INCI list

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

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% ingredients from natural origins*

*Calculation based on the international ISO 16128 standards.

Award-winning innovation 🏆

The Manucurist Day Night Duo, featuring two nail treatments, is displayed side by side on a pale background.
The Manucurist Day Night Duo includes a keratin serum booster (light green) and a nourishing S.O.S. nail mask (pink), perfect for regenerating your nail care routine.
Two bottles of Manucurist’s Day Night Duo are shown on a pink background. Text highlights clinical results: 85% saw harder nails and 80% observed more hydration after using this nail treatment and keratin serum.
Side-by-side images show a finger’s dry, peeling cuticles before and smooth, healthy cuticles after using Manucurist Day Night Duo. Each image is labeled to highlight the transformation.
A close-up of a person applying Manucurist&
The Manucurist Day Night Duo boxed manicure set includes a white keratin serum booster and a pink S.O.S. nail mask, all displayed on a light beige background.
Two clear Manucurist Day Night Duo nail care bottles with white caps are set against a soft pink background. The duo includes a keratin serum booster and Masque S.O.S nail mask, both for effective nail treatment.
Three manicure products for nail care on a light pink background: a square bottle of Manucurist Nail Strengthening Serum, a square bottle of Masque S.O.S. overnight nail mask, and a tube of Concentré perfecteur.
Day Night Duo by Manucurist: two luxurious manicure treatments presented on a light beige background, representing premium nail care from the esteemed Parisian brand.

Day & night routine for soft, damaged-looking nails

  • Strengthens and regenerates
    nails

  • A simple black outline of a magic wand with a star at the tip, surrounded by small lines representing sparkles or magical effects, on a light gray background.

    Repairs fragile
    nails

  • Simple black line drawing of an open right hand facing upward with three lines above it, suggesting receiving, offering, or presenting something.

    Intensely hydrates
    the nail plate

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

  • A hand applies clear nail polish to a fingernail using a brush applicator, with the nails neatly shaped and the background softly blurred.

    Apply the Keratin Booster 3 times a day

  • A close-up of a hand with a clear nail polish brush applying a layer of light pink polish to a fingernail. The nail is clean and well-shaped, and the background is softly blurred.

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

  • A close-up of a hand peeling a thin, transparent layer off a fingernail, revealing a clean nail underneath.

    Peel off the mask the next morning

FAQ

Our Frequently Asked Questions from our customers and community!

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.
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.

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