Formula No. 03
· Treat · AM & PM
Barrier Serum
A water-light gel with 10% niacinamide and 5% panthenol for skin that’s red, tight or reactive. Calms the surface, evens tone, and leaves nothing behind but a slight sheen.
30 ml · €0.93 / ml
30 ml
50 ml
Refill 50 ml
Add to bag — €28
Add to my routine
Skin
All types, incl. sensitive
When
Morning and night, after cleansing
Texture
Water-light gel, absorbs in ~30 s
pH
5.6
After opening
Use within 6 months
The full formula — in INCI order
Everything in the bottle, down to 0.1%.
Ingredient (INCI)
%
Aqua
74.2%
Niacinamide
10%
Panthenol
5%
Glycerin
3%
Pentylene Glycol
2%
Sodium Hyaluronate
1.5%
Phenoxyethanol
0.9%
Xanthan Gum
0.4%
Ethylhexylglycerin
0.3%
Allantoin
0.3%
Ceramide NP
0.2%
Citric Acid
0.1%
What we left out
✕
Fragrance & parfum
✕
Essential oils
✕
Drying alcohol
✕
Dyes & colourants
✕
Silicones
✕
Proprietary blends
pH
3 acidic
7 neutral
Close to the skin’s own surface pH, so it can follow any acid or retinal without stinging.
Pairs with
Builds well with
No. 05
Retinal Night Drops
● Same night is fine
No. 07
Ceramide Fluid
● Layer on top
Change log
v1.3
Mar 2026
Panthenol raised from 3% to 5% after 212 reviews mentioned tightness.
v1.2
Sep 2025
Swapped the gelling agent; texture now absorbs ~10 s faster.
v1.1
Feb 2025
Removed a citrus extract that was only there for scent.