Hanna Sillitoe Review: Gut-First Skincare for Eczema and Psoriasis

This Hanna Sillitoe review looks at the UK founder-led brand's gut-first approach to eczema- and psoriasis-prone skin — a range built from Hanna Sillitoe's own 20-year skin history rather than a lab brief.

Hanna Sillitoe review: what the gut-skin science shows

Hanna Sillitoe's pitch is that skin health starts in the gut, and that a supplement-plus-topical routine can support skin that's prone to eczema, psoriasis, or reactive dryness. That framing comes from a real, verifiable story: founder Hanna Sillitoe managed severe eczema, psoriasis, and acne for more than 20 years, and turned to diet and lifestyle research after a doctor suggested a chemotherapy medication as a next step. She's since published two books on skin health, Radiant (2017) and Skin Healing Expert, and pitched the range on Dragons' Den in 2019, where she took investment from Peter Jones and Tej Lalvani after all five Dragons made offers.

Where this Hanna Sillitoe review has to slow down is the underlying probiotic-for-skin research, because it is genuinely a mixed picture — not a settled case. A randomized controlled trial found that maternal and infant supplementation with Lactobacillus rhamnosus HN001 halved the cumulative prevalence of eczema by age two compared with placebo — but that trial was about preventing eczema in infants, not treating an existing condition in an adult, and a different strain in the same study (Bifidobacterium animalis subsp. lactis) showed no benefit at all. For psoriasis, a 2025 systematic review of studies published between 2010 and 2025 found a 2021 trial of 50 patients showing improved DLQI and PASI scores with probiotics, while a separate 2023 trial of 103 patients using Lactobacillus rhamnosus found no improvement in those same scores.

Two independent bodies echo that caution directly. The National Eczema Society says it's "too early for experts to make any across-the-board recommendations" on probiotics for eczema, even while acknowledging some promise in specific strains during pregnancy and infancy. A PubMed-indexed NIH research synthesis on probiotics in dermatology similarly flags inconsistent trial design, short follow-up periods, and a reliance on symptom reports rather than measured skin-microbiome data — concluding that firm clinical recommendations can't yet be made. In plain terms: Multi Strain Biotic's inclusion of L. rhamnosus among its 15 cultures sits inside an area of real, active research — not a proven fix for a diagnosed skin condition.

Core Product

Multi Strain Biotic

15 bio-live bacterial cultures in a hand-brewed liquid, taken as one 15mL dose each morning.

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The core Hanna Sillitoe product range

Beyond the flagship probiotic, Hanna Sillitoe's range splits into ingestibles and topicals, designed to work as a pair rather than standalone products. Below is what's actually documented on the brand's own product pages — no invented test results, just the formulations as published.

Best for daily gut support

Multi Strain Biotic

Format: Liquid, 475mL bottle, roughly one month's supply Cultures: 15 bio-live strains including L. rhamnosus, B. bifidum, L. plantarum Also contains: Aloe vera, hibiscus, turmeric, ginger, vitamin C, zinc, CoQ10 Dosage: 15mL each morning, 30 minutes before eating

What We Like

• Multi-strain formula with a documented, published ingredient list.
• Vegan, gluten-free, and cruelty-free, with a lower dose listed for children.

What to Consider

• Probiotic evidence for skin conditions in adults remains mixed and not condition-specific to this exact blend.
• A liquid daily dose is a bigger routine commitment than a capsule.

This is the product the rest of the range is built around, and it's also the one where the evidence gap matters most: it's a genuinely well-documented supplement, but "contains L. rhamnosus" is not the same claim as "clinically proven for eczema," and Hanna Sillitoe's own product page does not claim the latter.

View Multi Strain Biotic

Best for an internal daily ritual

Skin Purity Tea

Format: Caffeine-free loose-leaf blend Botanicals: Burdock root, red clover, chamomile, nettle leaf, marigold, cleavers Brew: 1 heaped teaspoon in 250mL boiling water, steeped 10 minutes, 1–3 cups daily

What We Like

• No added flavourings or sugar, with a clearly published six-botanical list.
• Caffeine-free, so it slots into an evening routine.

What to Consider

• This is a herbal infusion, not a substitute for probiotic or dermatology-recommended care.

Chamomile, nettle, and marigold are traditional botanicals used for calming and skin-tissue support; this is a wellness ritual product, and Hanna Sillitoe frames it that way rather than as a clinical treatment.

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Best for daily facial moisture

Vitamin D Face Cream

Format: Topical face cream, jar Positioning: Daily facial moisturiser alongside the internal range

What We Like

• Fills the topical half of the brand's internal-plus-topical approach for the face specifically.

What to Consider

• The brand has not published a detailed ingredient breakdown for this cream to the same depth as Multi Strain Biotic or Skin Purity Tea, so treat unverified specifics with caution and check the current product page before buying.

If you're specifically managing facial dryness or sensitivity alongside eczema or psoriasis elsewhere on the body, this is the product built for that use case — pair it with a patch test, as with any new facial product.

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Best for very dry skin

Prebiotic Hand & Body Repair Cream

Format: Topical body/hand cream, jar Positioned for: Very dry skin, hands and body

What We Like

• Purpose-built for the rough, dry patches that come with eczema-prone skin between flare-ups.

What to Consider

• As with the face cream, the brand hasn't published a detailed ingredient list here to the same depth as the supplements — check the current listing before buying.

This sits in the same product family the brand groups into its Eczema Recommendations Bundle, alongside Multi Strain Biotic — the pairing reflects the brand's internal-plus-topical logic rather than a claim that the combination is clinically proven.

View Hand & Body Repair Cream

What to look for before you buy

Match the product to a real, documented use case

Because the underlying probiotic-for-skin research is still developing, the most useful filter isn't "which product cures my condition" — none of them claim to — it's "which product matches a documented use case I actually have." Multi Strain Biotic is for people wanting a daily, multi-strain gut supplement; Skin Purity Tea suits people who want a caffeine-free internal ritual; the two creams are for people managing external dryness on the face or body specifically. Reading the brand's own product page for exact current ingredients and dosing before ordering is worth the two minutes it takes, since formulations can be updated.

Check the safety-fit basics first

Multi Strain Biotic is described by the brand as vegan, gluten-free, cruelty-free, and suitable during pregnancy and breastfeeding, with a reduced dose for children. That said, anyone pregnant, breastfeeding, on medication, or managing a diagnosed autoimmune or skin condition should still confirm with their own doctor or dermatologist before adding a new supplement or topical — a probiotic, however well-formulated, is not a substitute for a treatment plan a dermatologist has already prescribed. If your eczema or psoriasis is flaring, worsening, or affecting a large area of skin, see a dermatologist before trying any new product, supplement, or diet change.

Weigh the trust signals against the evidence gap honestly

Hanna Sillitoe earns real trust signals: a verified B Corp certification with a 95.4 Impact score, Leaping Bunny cruelty-free status, Dragons' Den-backed funding, and a founder with two published books on the topic. None of that, however, substitutes for large, consistent clinical trials on the specific products sold — which don't yet exist for this range, and may not exist for any single-brand supplement line for some time. Judge the brand on transparency and formulation quality, not on implied medical claims it doesn't actually make.

If you also track skin health as part of a broader wellness routine, pairing a gut-first supplement range like this with objective baseline data — such as an at-home blood test covering inflammation and micronutrient markers — can give you a clearer picture of what's actually changing internally, rather than relying on how your skin looks week to week. Filtered shower water is another complementary aspect of a sensitive-skin routine worth exploring.