New ✨
Duo IN & OUT
New ✨
Duo IN & OUT
New ✨
Duo IN & OUT
Nail care

Duo IN & OUT

The personalised IN & OUT duo for healthy nails, all year round!

The IN & OUT routine adapted to each type of nail: 2 nail cares working in synergy for a visible and long-lasting result.

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Only 1000 items in stock!

Duo IN & OUT

Only 1000 items in stock!
Free shippingwhen you spend £39 or more
Secure paymentCredit card and Paypal
Eco-friendly packagingDelivered in 100% corn-starch packaging chips


  • Up to 84% bio-sourced ingredients
    Plant-based ingredients extracted from natural, renewable sources
  • Made in France
    Products made in France
  • Vegan
    Our aim is to develop products without using ingredients that come from animals or the farming of animals
  • 12-free
    Green Flash
  • Eco-friendly packaging
    Recyclable packaging, FSC cardboard and biodegradable packing peanuts
  • No toxic ingredients
    Products formulated based on a strict blacklist

Kit content

  • Nail Boost

    Nail Boost

  • The treatment base coat of your choice

    The treatment base coat of your choice




IN : Nail Boost food supplements act from the inside to provide all the elements necessary for the synthesis of keratin, the main component of nails and hair. A complete formula for strengthened nails and boosted growth.

OUT : the base acts locally to respond to a targeted problem and to sublimate the nail. Choose the base adapted to your needs.


  • A customizable routine to meet all your nail needs
  • Bio-sourced formulas
  • Recyclable & eco-designed packaging

How to use Nail Boost food supplements?

As a treatment, take 4 capsules a day (for no more than 3 months)
For maintenance, take 2 capsules a day (for no more than 6 months)

View ingredients

Protocol We tell you everything!

  1. File your nails into your desired shape
  2. Gently buff each nail for 5 seconds in the direction of growth
  3. Use the cuticle remover and cuticle pusher to push back the cuticles
  1. Apply Green Oil to the surface of the nail
  2. Remove the oil from the surface of the nail with a gentle nail polish remover
  3. Use the treatment base coat to care for and protect your nails

The word of the teaM

"The perfect duo to boost growth and keep your nails healthy"


FAQ Your questions

Find out the most frequently asked questions for this product

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We are committed to offering you a complete formula guaranteed to meet 100% of your daily vitamin, mineral and amino acid requirements, recommended for healthy nail growth.

Our formula is not chemically concentrated. So you need a specific amount of plant extracts to fully meet your body's needs.

These food supplements are not recommended for pregnant or breastfeeding women, anyone with hyperthyroidism or anyone taking anticoagulants.

Long-term use is not recommended; nor is exceeding the recommended dose.

Our supplements contain brewer's yeast from beer wort. Beer wort is obtained from malt and hops. Our supplements may therefore contain traces of gluten. If you are allergic, we recommend you consult your doctor.

May contain traces of gluten.

If your nails break or split easily and have white scratch-like marks, they are damaged. The S.O.S. Base Coat is what you need.

If your nails are misshapen and bend when gently pressed, they are soft. They need a strengthening base coat like Force Green.

Yes, we recommend you always apply a base coat under your polish to help the colour adhere and protect the nail from the pigments.

You can apply a layer of treatment base coat before your full Green Flash manicure. However, the treatment base coat does not replace the Green Flash Base Coat.

Yes, the base coat can be removed with Green Nail Polish Remover.

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How do I choose my treatment base coat?

Base S.O.S


  • Regenerates very damaged nails
"The ultimate base coat for very damaged nails"

Green Force


  • Strengthens soft
"The perfect
base coat
for soft nails"

Base 5.5


  • Deeply nourishes the nails
"The perfect
base coat
for healthy nails"

Smoothing Base


  • Evens out ridged or uneven nails
"The perfect
base coat
for ridged nails"

Ingredients Nail care products


Designed for each step of your manicure, our nail care range includes a cuticle remover to make it easier to work on your cuticles, 4 treatment base coats (one for each type of nail) and a green oil chosen for its nourishing properties. 

The result? Long-lasting colour combined with a unique sensory experience!

Our Philosophy

Spotlight on the ingredients

Brewer's yeast

Rich in vitamins and minerals, brewer's yeast strengthens and regenerates brittle nails.


Bamboo sap (bambusa vulgaris sap extract) helps make nails strong and healthy. 


Natural horsetail extract, rich in silica, gives strength and vigour to the nails.

Reviews Our customers talk about us!

Our reviews are collected 2 weeks after any purchase and these are the reviews of verified buyers only

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