The skin strengthener

Barrier boost B3 serum +/- 3 months of usage €0.33 / day

Safe for sensitive skin
All skin types
Strenghtens skin barrier
Reduces pore size
Improves skin texture

A waterweight serum that strengthens your skin barrier (the foundation of healthy and self-regulating skin!), visibly minimises pore size, and refines uneven skin tone.


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  • Niacinamide

    This form of vitamin B evens out skin tone and texture, fights blemishes, brightens hyperpigmentation, unclogs pores, treats signs of ageing, all while replenishing hydration. Formulated at an optimal 5% to ensure effectiveness without irritation, this star ingredient lives up to all of the hype.

  • Ceramides

    Truly moisturizing, ceramides help restore the skin barrier to keep it hydrated and healthy. Dry, flakey skin is reduced within weeks for a soft, supple look and feel.

aqua (water) (solvent), niacinamide (skin restoring), propanediol (solvent), diglycerin (moisturizer/humectant), glycerin (moisturizer/humectant), 1,2-hexanediol (solvent), glycine soja (soybean) seed extract (antioxidant), hydroxyacetophenone (antioxidant), polyacrylate crosspolymer-6 (viscosity controlling), ceramide np (skin replenishing ), polyglyceryl-10 stearate (emulsifying), hydrogenated lecithin ( emulsifying), sucrose stearate (emollient), tetrasodium glutamate diacetate (chelating), citric acid (PH adjusting)

How to apply

Press the dropper and release 2-3 drops in the palm of your hand, on your finger tips or directly on a cleansed face and neck. To ensure optimal hygiene, the dropper should never make contact with your face or hands. Gently massage or pat the liquid into your skin. Wait for the serum to fully absorb and follow with a moisturizer to lock all the good stuff in.


A waterweight, translucent orange milky fluid that absorbs quickly into the skin.


Every morning and evening, after cleansing and before moisturizing.

Real results

dermatologically tested & tolerance tested. 8 out of 10 subjects said their skin barrier improved after 6 weeks.

See full clinical trial

Free shipping

Don't miss out! Free shipping sitewide for all orders to Europe. Order before 10 PM in the Netherlands and Belgium for next day delivery. For other countries, orders will be dispatched within 48 hours.

Returns are free of charge. Products are eligible for return within 30 days of date of purchase.



Minimalist beauty

Made in Switzerland

Our philosophy

We craft our formulas with a minimalist mindset. We only use proven active ingredients in proper dosages to ensure maximal efficacy, without irritation. No fillers, additives or fragrance- ever.

Did you know?

Routinely uses 5% niacinamide since the most promising studies are done on this percentage. When increasing the percentage, the risk of irritation grows while there is no proof of increased performance.

Ask us anything

We're here to help and demystify everything about
The skin strengthener.

Is it safe to use Niacinamide with other sort of acid or will it turn into Niacin?

Yes, our formulation is safe to use with other acids, also Vitamin C. If you want to be a 100% sure about Niacinamide in your product not turning into Niacin, wait for the one product to dry first before applying the other.

Do your products have microplastics?

Our products do not contain microplastics.

Is it useful to use several serums at once?

Yes, you can achieve better targeted results depending on your skin goals by using several serums at once.

Loved by many

Trustpilot reviews Routinely

Combines well with


Leveraging the best of nature and science.

Clean formulas

Formulated without ingredients shown or suspected to harm human or planet health.

Local production

Co-created and manufactured with a boutique R&D lab in Switzerland.