The science
What the evidence actually says
Where the research is solid we say so. Where it is thin, we say that too. Sources are on the page so you can check them yourself.
It starts at the barrier
Skin holds water in and irritants out through a lipid matrix — largely ceramides, cholesterol and fatty acids. In atopic skin, ceramide levels are measurably lower, and that difference is detectable before a flare is visible.
That is why the first product in the range is a barrier repair moisturiser rather than something that targets the itch. Calming the surface without rebuilding the structure underneath is a short loop that keeps coming back around.
Topical steroid withdrawal
Topical corticosteroids are the standard first-line treatment for eczema in the UK, and for many people they work. For a subset of long-term users, stopping produces a rebound reaction that can be more severe than the original eczema — burning, redness, oozing, and an itch that is not local.
Recognition is recent. The MHRA updated its guidance in 2024, and the British Association of Dermatologists issued its first joint position statement with the National Eczema Society in February 2024. Clinical consensus is still forming:
34%
of UK dermatologists consider TSW a distinct clinical entity
48.5%
are simply unsure whether it is real
18%
feel their TSW patients receive adequate care
Guckian et al., Skin Health & Disease, 2025 — survey of 103 UK dermatology consultants, registrars and fellows, published by Oxford University Press on behalf of the British Association of Dermatologists.
That is the gap. Hundreds of millions of views on the subject online, and a clinical picture that is still being argued about. People end up assembling their own understanding from forums because the guidance is not there yet.
We are not going to resolve that argument, and we are not going to pretend a moisturiser does. What we can do is be steroid-free by design, say so on the front of the pack, and point at the research rather than around it.
Every ingredient, and why
Five actives carry the range. Each is here because there is published work behind it, not because it reads well on a label.
Ceramides
Ceramide NP, Ceramide AP, Ceramide EOP
The structural lipid the barrier is built from. Levels are reduced in atopic skin before lesions appear, so topical supplementation is about rebuilding architecture rather than adding surface hydration.
Niacinamide
Niacinamide (Vitamin B3)
Stimulates the skin's own ceramide synthesis and reduces water loss through the barrier. Randomised trial evidence exists for improvement on SCORAD and POEM, the two standard eczema severity scales.
Ectoine
Ectoin
An extremolyte produced by microorganisms living in salt flats and hot springs, where it stabilises cell membranes. In a randomised trial in atopic dermatitis patients it reduced antihistamine use from 1.7 to 0.8 days per week — the strongest trial result behind any ingredient in this range.
Colloidal Oatmeal
Avena Sativa (Oat) Kernel Flour
The only over-the-counter ingredient with FDA skin protectant status for eczema. Its avenanthramides inhibit NF-kB signalling and mast cell histamine release — the mechanism behind the itch, not just the feeling of it.
Centella Asiatica
Centella Asiatica Extract, Madecassoside
Madecassoside supports re-epithelialisation and inhibits hyaluronidase, which extends how long hyaluronic acid stays active in the skin. Long history of use, reasonable evidence base.