Nail strengthener and hardener
Stronger Nails Duo

$26
$31
$26

  • Fortifies
    The Stronger Nails Duo by Manucurist, featuring Concentré perfecteur and Masque S.O.S. for nail repair and luxury care, is displayed on a light beige background.
  • Graphic with “Stronger Nails Duo” by Manucurist—includes a Nourishing Nail Pen for daily strengthening and Masque S.O.S. for weekly hydration and repair. Use the pen daily; apply masque once a week for best results.
  • A hand applies Manucurist’s Stronger Nails Duo onto another’s nails against a pale pink background, repairing and perfecting nails for a healthy look.
  • The Manucurist Stronger Nails Duo rests on a light pink background, with text stating it repairs 88% of nails, strengthens 87%, and protects 88% of nails and cuticles after 3 weeks.
  • Two white manicure pens from the Stronger Nails Duo by Manucurist, shown on a peach background. One pen is closed and the other shows a brush tip. Both feature green text and are labeled “Concentré perfecteur.”.
  • A pink bottle of Manucurist Stronger Nails Duo is shown, with text highlighting its nail care benefits—hydrating and repairing nails overnight, plus stats on improved moisture, strength, and hardness after 14 days.
  • A close-up of a hand applying Manucurist&
  • The Manucurist Stronger Nails Duo features a cuticle care pen and a clear pink overnight nail mask on a light pink background for elevated nail care.
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An intensive day-and-night care duo for brittle and damaged nails.

Cold weather, overworked hands, or traditional semi-permanent polish... The nail plate can easily become weakened.

A complete nail care routine to deeply nourish strengthen and repair nails with the nourishing nail pen applied throughout day sos mask used at bedtime.

Free 30-day Return Guarantee

Free Shipping on orders + $35

4.6/5 – Trusted by 117,000+ customers globally

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Included in the set

Description

After 3 Weeks*:
My nails and surrounding areas are strengthened (87%)

My nails are repaired (88%)

The quality of my nails and surrounding areas is visibly improved (88%)

My cuticles are softened (88%)

My nails and surrounding areas are nourished (83%)

My nails are harder (83%)
92% recommend the product

*Test conducted under dermatological control on a panel of 24 participants over 21 days.

A Complete Routine with Naturally Powerful Ingredients:
Concentrated Nail Perfector:

Pistacia Extract: Hardens and significantly strengthens nails

Castor Oil: Deeply hydrates nails and their contour

Vitamin E: Protects against external aggressions

Sunflower Oil: Nourishes and protects nails from breakage

SOS Mask: D-Panthenol: Hydrates and strengthens nails

How-to-use

Nourishing Nail Pen: Apply daily to the nail and its surrounding area as needed. Gently massage to promote absorption.

SOS Mask: Apply a thick layer of the SOS Mask to clean nails, as you would with a polish. Allow it to air dry completely. Once dry, leave it on overnight. The next morning, peel it off or rinse with soapy water. Repeat this routine three times a week.

Sustainable Packaging

Glass Bottle: Emptied, cleaned and dried bottles can either be reused or placed in a recycling bin separate from other materials to avoid contamination. If your local municipality 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 labelling

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)

Nail Nourishing Pen

HELIANTHUS ANNUUS SEED OIL, CAPRYLIC/CAPRIC TRIGLYCERIDE, GLYCERIN, AQUA, OLEIC/LINOLEIC/LINOLENIC POLYGLYCERIDES, SUCROSE LAURATE, SUCROSE STEARATE, PARFUM (FRAGRANCE), PHENYLPROPANOL, TOCOPHEROL, RICINUS COMMUNIS SEED OIL, SUCROSE PALMITATE, PISTACIA LENTISCUS GUM, CITRONELLOL, GERANIOL, LINALOOL

100% plant-based

S.O.S Nail Mask

AQUA (WATER), ALCOHOL DENAT., POLYVINYLALCOHOL, PANTHENOL, PARFUM (FRAGRANCE), ALCOHOL, TRIS(TETRAMETHYLHYDROXYPIPERIDINOL) CITRATE, CI 14700 (RED 4),EUGENOL, GERANIOL, CITRONELLOL

80.5% plant-based
The Stronger Nails Duo by Manucurist, featuring Concentré perfecteur and Masque S.O.S. for nail repair and luxury care, is displayed on a light beige background.
Graphic with “Stronger Nails Duo” by Manucurist—includes a Nourishing Nail Pen for daily strengthening and Masque S.O.S. for weekly hydration and repair. Use the pen daily; apply masque once a week for best results.
A hand applies Manucurist’s Stronger Nails Duo onto another’s nails against a pale pink background, repairing and perfecting nails for a healthy look.
The Manucurist Stronger Nails Duo rests on a light pink background, with text stating it repairs 88% of nails, strengthens 87%, and protects 88% of nails and cuticles after 3 weeks.
Two white manicure pens from the Stronger Nails Duo by Manucurist, shown on a peach background. One pen is closed and the other shows a brush tip. Both feature green text and are labeled “Concentré perfecteur.”.
A pink bottle of Manucurist Stronger Nails Duo is shown, with text highlighting its nail care benefits—hydrating and repairing nails overnight, plus stats on improved moisture, strength, and hardness after 14 days.
A close-up of a hand applying Manucurist&
The Manucurist Stronger Nails Duo features a cuticle care pen and a clear pink overnight nail mask on a light pink background for elevated nail care.

The "Lip Balm for Nails"

Three simple, black, four-pointed star shapes arranged in a cluster on a plain white background, resembling sparkles or twinkling stars.

Nails are nourished and strengthened

A simple line drawing of a box surrounded by three curved arrows forming a triangle, symbolizing recycling or reuse of packaging.

Packaging made from sugarcane, 100% recyclable

A simple black outline of a hand holding a small plant with three leaves, symbolizing growth, care, or environmental stewardship.

Vegan and 100% natural origin

How to Use the Nourishing Nail Pen
Effortless on-the-go application!

  • A hand with short, neatly manicured nails painted in a pale, creamy polish holds a white pen-like applicator close to the nails, likely for nail care or cuticle treatment. Sunlight gently illuminates the fingers.

    Apply to the nail surface and its contour and massage

  • A close-up of a hand with short, neatly filed nails painted in a glossy, pale cream color, holding a piece of white fabric.

    Reapply as needed without rinsing.

  • A person with neatly manicured, pale nude nails holds a tube of Manucurist Paris nail and cuticle cream, gently squeezing some product onto their other hand.

    A convenient format, perfect for quick, on-the-go treatments!

FAQs

Les questions les plus fréquemment posées par nos utilisatrices et notre communauté !

Can I use a treatment base coat as a base coat for my Green™ or Green Flash™ polish?

Treatment base coats can be used as a base coat as part of your Green manicure.

However, they cannot be used instead of a Green Flash™ base coat, which needs to dry under the lamp.

How many coats of treatment base coat do I need to apply?

A single coat is enough.

Can I use a treatment base coat under Green Flash™?

For maximum staying power, we recommend that you only use Green Flash™ Base Coat.

Can treatment base coats be removed with Green Flash™ Nail Polish Remover?

All our treatment base coats can be removed like our polish - with our Nail Polish Remover or Green Flash™ Nail Polish Remover.

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 pregnant and/or breastfeeding women use your nail care range?

Our nail care formulas are green and clean: they are up to 99% plant-based, i.e. made from biomass ingredients like aloe vera, lemon, ginseng, pomegranate and grape. However, women should avoid all types of nail polish when they are pregnant or breastfeeding. We recommend you speak to a healthcare professional if you are unsure.

Can using your nail care products cause allergies?

Our nail care formulas meet European standards and do not contain any sensitising substances. They are also certified gluten-free and safe for people with gluten intolerance or celiac disease, as are our Green Flash™, Green™ and Active™ ranges. Most customers who are allergic to regular nail care products are not allergic to the Manucurist nail care range. However, as allergic reactions are not specifically linked to chemical ingredients, they can sometimes occur with plant-based ingredients. We recommend you speak to a healthcare professional if you are unsure.

For more information, see our blog on allergies.

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: 4.785714 / 5 from 42 reviews.

AI Generated Review Summary

Summary topics

Review topics: [look, nails, cuticles, masque, treatment, mask].

Review highlights

Reviews

IT WORKS!

"I took time t write this review waiting to see results, I have had issues with my nails i guess due to gel manicures, I can honestly say i have never seen my nails looking good for a very long time. They were dry and brittle with ridges all over. I love the peel off witch leaves my nails hydrated and smooth, then the cuticle glides over so smoothly and sinks in leaving a healthy looking nail. I am really impressed and show off my bear nails without any embarrasment."

— Sarah C. (5/5)

Still a little early to

"Still a little early to say. However, 3 weeks in I do see some improvements. My nails were constantly splitting and catching on things. I made the decision to cut them extremely short and start using the Manucurist Stronger Nails Duo. This has definitely helped. The smell of the treatment is really nice! The only thing I notice now is my thumb nails are still chipping and splitting. However, not as badly as they use to. Still early days but appears to be making a difference!"

— Layla D. (5/5)

Ottimi, le mie unghie hanno

"Ottimi, le mie unghie hanno un valido aiuto"

— Valentina T. (5/5)

Strength and moisture for frequent handwashers

"My nails love this stuff. I work as a barista so my hands and nails get very dry (and beat up) during the workday from frequent handwashing. They've obviously gotten stronger with consistent use. A little goes a long way and I just purchased my second tube after a year with the first one"

— Nicola (5/5)

Thank you!

"Thank you!"

— Laura L. (5/5)

Vey good

"Vey good"

— Divina R. (5/5)

Nails and cuticles serum arrived

"Nails and cuticles serum arrived defective. The bottle doesn't close, it's impossible to use the brush because the serum simply doesn't get in there, it's impossible to take with you because the bottle cap falls off and the serum spills out in your bag."

— Tatsiana T. (2/5)

J’ai eu un souci malheureusement

"J’ai eu un souci malheureusement avec le concentre perfecteur qui n’était pas percé donc ne distribuait pas de produit… j’ai dû faire un trou moi même"

— Alice B. (4/5)

I am loving this item

"I am loving this item so far, it’s only been two weeks and I can see a significant difference in my nails."

— Felicia G. (5/5)

Keeps my nails in tact!

"Keeps my nails in tact!"

— Galina O. (5/5)

Q&A